Dedication: 3/15/05

decet: it is right, it is becoming; decorus: graceful; decus: beauty; dedecus: disgrace

decency, decent, decently, decor, decorate, decoration, decorative, decoratively, decorator, decorous, decorously, decorousness, decorum, dedecorate, dedecoration, indecency, indecent, indecently, indecorous, indecorously, indecorum, redecorate, undecorated

declino (slope down): see clivis
decus (beauty): see decet
defendo (protect): see -fendo
deleo, deletum: destroy (see also dhleomai)

dele, delete, deletion, deletory, delible, indelibility, indelible, indelibly

delicio: entice; delecto: delight; deliciae: plaything; elicio: entice, call forth; laqueus: lasso

delectability, delectable, delectableness, delectably, delectation, delicacy, delicate, delicately, delicateness, delicatessen, delicious, deliciously, deliciousness, delight, delightedly, delighter, delightful, delightfully, delightfulness, delightingly, delightless, delightsome, delightsomely, delightsomeness, dilettante, dilettantism, elicit, elicitation, elicitor, enlace, enlacement, indelicacy, indelicate, indelicately, interlace, lace, laceless, lacemaking, lacery, lacework, lacing, lacy, lasso, latchet, luscious, lusciously, lusciousness, necklace, noninterlaced, overdelicate, point lace, shoelace, strait-laced, tight-laced, tight-lacing, unlace, unlaced

See OED entries for lacquer, latch.
delictum (wrongdoing), delinquo (commit a wrong): see linquo
demi-: half

demigod, demilune

Also many obscure combinations such as demi-angel.

ultimately from medius

dens (gen. dentis): tooth (cf. odouV)

bident, bidental, bidentate, dandelion, decemdentate, dedention, dent, dental, dentalite, dentality, dentalium, dentalize, dentaria, dentary, dentate, dentation, dentel, dentelate, dentelle, Denticare, denticete, denticle, denticular, denticulate, denticulation, denticule, dentifactor, dentification, dentiform, dentifrice, dentigerous, dentil, dentilabial, dentile, dentilingual, dentiloquent, dentinal, dentine, dentinoid, dentiparous, dentiphone, dentiscalp, dentist, dentistry, dentition, dentology, denture, denturist, duplicidentate, edental, Edentata, edentate, edentulous, indent, indentation, indenture, interdental, labiodental, laminodental, latidentate, linguodental, monodentate, multidentate, octodentate, ostracodent, palatodental, parvidentate, paucidentate, peridental, pluridentate, polydentate, postdental, quadridentate, quinquedentate, subdental, trident, tridental, tridentate, tubulidentate, unidentate, unindented

densus: thick, crowded, frequent

condensability, condensable, condensate, condensation, condensational, condense, condenser, condensity, contrail, decondensation, dense, densely, densener, denseness, densimeter, densitometer, densitometry, density, double-density, incondensable, noncondensing, precondense, radio density, traffic density, uncondensed, weight density

destino (destine): see -stino
deterior: worse, poorer

deteriorable, deteriorate, deterioration, deteriorative, deteriorator

deus: a god; dea: goddess; divinus: divine; divus: divine

adieu (Fr), adios (Sp), ad maiorem Dei gloriam, Agnus Dei, AMDG, D.D., Dei gratia, deicidal, deicide, deific, deification, deificatory, deifier, deiform, deiformity, deify, deiparous, deism, deist, deistic, deitistical, deity, deityship, deodand, Deo gratias, Deo volente, deus ex machina, Deus vult, dieu (Fr), diva, divination, divinatory, divine, divinely, divineness, diviner, divinify, divinity, divinityship, divinization, divinize, Divvers, gloria in excelsis Deo, hyperdeity, joss, mon Dieu (Fr), Opus Dei, vox populi vox Dei, water deity

dexter: right-handed, favorable, skilled

ambidexter, ambidexterity, ambidexterous, destrer, Dexter, dexterity, dexterous, dexterously, dexterousness, dextrad, dextral, dextrality, dextrally, dextran, dextranase, dextraural, dextrin, dextro-, dextrocompound, dextroglucose, dextrogyrate, dextromanual, dextrorotary, dextrorotation, dextrorsal, dextrosinistral, dextrorse, dextrose, dextrous, dextrously, sinistrodextral

di-: = dis-: apart

distance etc.

Diana: Diana

Diana, Diane

Diana may derive from DioV, form of ZeuV.
dico (1): show, devote, consecrate; indico: proclaim; praedico: boast

abdicate, abdication, abdicator, coindicant, coindication, contraindicate, contraindication, contraindicative, dedicand, dedicate, dedicated-looking, dedicatee, dedication, dedicational, dedicative, dedicator, dedicatorial, dedicatorily, dedicatory, impeach, impeachability, impeachable, impeacher, impeachment, impredicable, impredicative, index, indexer, indexical, indexically, indicate, indication, indicative, indicatively, indicator, indicatory, indicatrix, indicial, preach, preachable, preacher, preaching, preachment, preachy, predicable, predicament, predicant, predicate, predication, predicative, predicator, predicatory, price index, rededicate, unimpeachable, unimpeached, word-index

dico, dictum: say; condicio: terms; dictito: insist; indico: betray

addict, addicted, addiction, addictionologist, addictive, adjudge, adjudicate, adjudication, adjudicative, adjudicator, air-condition, Benedict, Benedictine, benediction, benedictive, benedictory, benison, condiction, condition, conditional, conditionalism, conditionalist, conditionality, conditionalize, conditionally, conditionate, conditioned, conditioner, conditioning, contradict, contradictable, contradictedness, contradiction, contradictionist, contradictious, contradictiously, contradictive, contradictively, contradictor, contradictorily, contradictory, decondition, dictaphone, dictate, dictater, dictation, dictative, dictator, dictatorial, dictatorialism, dictatorially, dictatorialness, dictatorily, dictatorship, dictatory, dictatress, dictatrix, dictature, diction, dictionary, dictioneer, dictograph, dictum, dijudicate, diktat, dittay, ditto, dittohead, dittology, ditty, edict, edictal, extrajudicial, extrajudicially, fatidical, forejudge, forjudgment, horribile dictu, ill-conditioning, ill-judged, indict, indictable, indicter, indictment, indite, inditement, inditer, injudicial, injudicious, injudiciously, injudiciousness, interdict, interdiction, interdictor, interdictory, intrajudicial, ipse dixit, judge, judger, judgeship, judgmatic, judgmatically, judgment, judgmental, judgmentally, judication, judicative, judicator, judicatory, judicature, judicial, judicially, judiciary, judicious, judiciously, judiciousness, juridical, juridically, jurisdiction, jurisdictional, jurisdictionary, maledict, malediction, maledictive, maledictory, mirabile dictu, misjudge, misjudgment, nonaddict, nonaddiction, nonaddictive, noncontradiction, nonjudgmental, nonpredictor, obiter dictum, postdiction, preconditioned, predict, predictable, predictably, predictand, prediction, predictive, predictor, prejudge, prejudice, prejudicial, quantum condition, recondition, retrodiction, secondary conditioning, self-contradiction, soil conditioner, sound condition, unconditional, unconditionally, unconditioned, unindited, unjudicial, unpredictable, unpredictably, unpredicted, unprejudiced, valediction, valedictorian, valedictory, verdict, veridical, veridicality, veridically, veridicity, voir dire (Fr)

Dido: Dido

Dido, didonia

dies: day; biduum: two days; cotidie: every day; hodie: today; triduum: three days

adjourn, adjournment, aggiornomento (It), a. m., antemeridian, ante meridiem, autodial, bon jour (Fr), carpe diem, circadian, dial, dialer, dialplate, diarial, diarian, diarist, diarize, diary, Dies Irae, dismal, dismality, dismalize, dismally, dismalness, diurnal, diurnally, diurnation, diuturnal, du jour (Fr), hodiernal, jornada, journal, journalese, journalism, journalist, journalistic, journalistically, journalize, journey, journeycake, journeyman, meridian, meridienne, meridional, meridionality, meridionally, noctidiurnal, outjourney, parajournalism, per diem, photojournalism, photojournalist, pomeridian, post diem, postmeridian, post meridiem (p.m.), pridian, quotidian, readjourn, semidiurnal, sine die, sojourn, sojourner, sundial, terdiurnal, transmeridional, tridiurnal, triduum, ultradian

digitus: finger

bit, byte, cubitodigital, digit, digital, digitalic, digitalis, digitalization, digitalize, digitally, digitate, digitately, digitation, digitiform, digitigrade, digitinervate, digitipartite, digitipinnate, digitize, digitizer, digitorium, digitoxin, dital, gigabyte, imparidigitate, interdigitate, kilobyte, mediodigital, megabyte, MIDI, multidigitate, nanobyte, orthodigital, paridigitate, polydigital, postdigital, prestidigitation, quadridigitate, quinquedigitate, sexdigitate, terabyte, tridigital

dignus: worthy; dignor: deem worthy (OLD ultimately relates to decet)

condign, condignity, condignly, daintily, daintiness, dainty, deign, dignified, dignifiedly, dignifier, dignify, dignitarial, dignitarily, dignitary, dignity, disdain, disdainer, disdainful, disdainfully, disdainfulness, indignant, indignantly, indignation, indignity, infra dig(nitatem), otium cum dignitate, undignified

dirus: fearful, terrible

dire, direful, direfully, direly, direness

dis-: apart

disappear, discuss, disdain, differ, digress, dismiss, disparate, dissent, distort etc.
disco: learn; disciplina: training (cf. didaskw)

condisciple, disciple, discipleship, disciplinable, disiciplinal, disciplinant, disciplinarian, disciplinary, disciplinatory, discipline, discipliner, discipular, indisipline, interdisciplinary, multidisciplinary, self-discipline, undisciplined

dissipo (scatter): see supo
dives: rich

Dives
divido, divisum: divide

condivision, device, deviceless, devise, devisee, deviser, devisor, disindividualize, dividable, divide, dividedly, dividedness, divide et impera, dividend, dividendless, divider, dividingly, dividual, dividually, divisibility, divisible, divisibly, division, divisional, divisionism, divisive, divisively, divisiveness, divisor, divvy, individual, individualism, individualist, individualistic, individuality, individualized, individually, individuate, individuation, indivisibility, indivisible, indivisibly, indivision, second-division, subdivide, subdivision, transindividual, undivided
divus (divine): see deus
do, datum: give (cf. didwmi); dono (1): give; donum: gift; dos: dowry; doto (1): endow;

abdo: hide; dedo: surrender; perdo: destroy; redo: return; trado: betray

add, addendum, addition, additional, additionally, additive, additively, additory, add-on, antedate, betray, betrayal, betrayer, biodata, carbon dating, caveat venditor, co-editor, condonable, condonation, condonative, condone, condoner, dado, data, data base, datary, date (social, time), dateless, dateline, datival, dative, datum, dedimus, dedition, dedendum, deodand, detur, dice, dice-box, dicer, dicey, die (sg. of dice), donary, donatary, donate, donatee, donation, donative, donatively, donator, donatory, donee, donor, donorship, dotal, double date, dowager, dowee, dower, dowerless, dowry, dowryless, edit, edition, editionizing, editor, editorial, editorialist, editorialize, editorially, editorship, editress, endow, endower, endowment, extraditable, extradite, extradition, neotraditionalist, nontraditional, op ed, pardon, pardonable, pardonably, pardoner, pardonless, pardonmonger, perdition, postdate, predate, radio dating, render, rendezvous, rendition, rent, rentable, rental, renter, sacerdocy, sacerdotal, sacerdotalism, sense-datum, superadd, superaddition, surrender, surrenderee, surrenderer, tradition, traditional, traditionalism, traditionalist, traditionalistic, traditionalize, traditionally, traditionary, traditionist, traditor, traitor, traitorism, traitorous, traitress, treason, treasonable, treasonably, treasonous, treasonously, unpardonable, unpardonably, unpardoned, untraditional, up-to-date, vend, vendage, vendee, vender, vendeuse (Fr), vendible, vending, vending machine, vendition, vendor, vendue, view data

OLD associates dos and doto with do. Mando (q.v.) is manus + do.

Since only W2 derives trade from trado, it seems best to regard it as a false derivative.
doceo, doctum: teach; doctrina: teaching (cf. dokew)

D.D., doc, docent, docible, docile, docilely, docility, docious, docity, doctor, doctoral, doctorally, doctorand, doctorate, doctorial, doctorism, doctorly, doctorship, doctress, doctrinaire, doctrinairism, doctrinal, doctrinally, Doctrinarian, doctrinary, doctrine, doctrinism, doctrinization, doctrinize, docudrama, document, documentable, documental, documentalist, documentarian, documentarily, documentary, documentation, documentative, Dr., Dr. Pepper, indocile, indocility, indoctrinate, indoctrination, M.D., paradoctor, Ph.D, postdoctoral, school doctor, snake doctor, travel document, undocumented, water doctor

doleo: be sad, feel pain, give pain

condolatory, condole, condolement, condolence, condolent, condoler, condoling, condolingly, dol, doleful, dolefully, dolefulness, dolentissimo, dolesome, dolor, Dolores, doloriferous, dolorific, dolorifuge, dolorimeter, dolorimetry, doloroso (It), dolorous, dolorously, dolorousness, indolence, indolent, indolently

dolus: trick: see doloV
dominus (master): see domus (OLD).
domo (1): tame

daunt, dauntless, dauntlessly, indomitability, indomitable, indomitably, undaunted
domus: house; domicilium: residence; dominus: master

anno Domini (AD), astrodome, belladonna, co-dominant, condo, condomesticate, condominate, condominium, dame, damsel, danger, dangerous, dangerously, dangerousness, demesne, deuterodome, dom (title, church), domain, domal, domanial, dome, domelet, domestic, domesticable, domesticality, domestically, domesticate, domestication, domesticator, domesticism, domesticity, domesticize, domic, domical, domicile, domiliciary, domiciliate, domiciliation, domiculture, domify, domina, dominance, dominancy, dominant, dominantly, dominate, domination, dominative, dominator, dominatrix, domine, dominee, domineer, domineered, domineering, domineeringly, dominial, Dominic, dominical, Dominican, dominicide, dominie, dominigene, dominion, domino, Dominus vobiscum, domy, don, dona, donee, donna, donnish, donnishly, donnishness, donnism, donship, duenna, dungeon, duomo, endanger, endangerment, grandam, granny, ma’am, madam, madame, mademoiselle, madonna, majordomo, marm (dial), Mercedes, Notre Dame, onion dome, pentomino, predominance, predominancy, predominant, predominantly, predominate, prima donna, princedom, pseudodominance, pseudodominant, radome, stepdame, subdominant, superdominant, tetromino, tromino, undangered

dono (give), donum (gift): see do.
dormio, dormitum: sleep

dorm, dormancy, dormant, dormantly, dormer, dormette, dormeuse, dormient, dormition, dormitive, dormitorium, dormitory, dormouse, obdormition, walldormer

dorsum: back

dorsabdominal, dorsad, dorsal, dorsally, dorsibranchiate, dorsicollar, dorsicornu, dorsicumbent, dorsiduct, dorsiferous, dorsifixed, dorsiflex, dorsigerous, dorsigrade, dorsimedian, dorsimeson, dorsiparous, dorsispinal, dorsiventral, dorsocaudal, dorsocervical, dorsocollar, dorsointercostal, dorsointestinal, dorsolateral, dorsolumbar, dorsopleural, dorsoscapular, dorsosternal, dorsoumbonal, dorsoventral, dorsum, dos-a-dos, dossal, dosser, dossier, endorse, endorsee, endorsement, endorser, extrados, indorse, indorsee, indorsement, indorser, intrados, mediodorsal, mesodorsal, parados, planidorsal, reredos, subdorsal, tournedos, ventrodorsal

dos (dowry), doto (pay dowry): see do
draco: see drakwn
dubito (doubt, hesitate): see duo, habeo
duco, ductum: lead; dux: leader; produco: produce; reduco: lead back; traduco: lead across

abduce, abducent, abduct, abductee, abduction, abductive, abductor, adduce, adducer, adducible, adduct, adduction, adductive, adductor, aqueduct, archducal, archduke, byproduct, circumduction, coed, coeducate, coeducation, coeducational, condotiere, conduce, conducer, conducible, conducing, conducive, conduciveness, conduct, conductance, conducted, conductibility, consuctible, conductility, conductimetric, conducting, conduction, conductitious, conductive, conductivity, conductometer, conductometry, conductor, conductorial, conductorship, conductory, conductress, conduit, coproduce, coproduct, coproduction, counterproductive, deducate, deduce, deducibility, deducible, deduct, deductible, deductibly, deduction, deductive, deductively, deductivism, deeducate, deeducation, diseducate, dogal, dogate, doge, dorsiduct, douche, ducal, ducality, ducally, ducat, ducatoon, duce, duchess, duchesse, duchy, duct, ductile, ductilimeter, ductility, ductless, ductor, ductule, ductus, ductwork, duke, dukedom, dukeling, dukely, dukery, dukeship, dux, dux femina facti, echo-producing, eco-producing, educability, educable, educand, educatable, educate, education, educational, educationalist, educationally, educationary, educationese, educationist, educationize, educative, educator, educatory, educatress, educe, educible, educibly, educrat, educt, eductible, eduction, eductive, eductor, electroproduction, end-product, endue, extroduction, germiduct, gonoduct, inconducive, induce, inducement, inducible, induct, inductance, inductile, induction, inductional, inductionist, inductive, inductively, inductor, indue, intraduct, intro, introduce, introducer, introducible, introduction, introductive, introductively, introductorily, introductory, irreducibility, irreducible, irreducibly, levoduction, manuduction, misconduct, miseducate, miseducation, mucoduct, nonconductive, nonconductor, nonproductive, obduce, obduct, obduction, oleoduct, overeducated, overproduce, overproduction, oviduct, oxidoreduction, photoconduction, photoconductive, photoconductor, photoinduce, photoinduction, photoinductive, photoreduction, postreduction, produce, producent, producer, producership, producible, producibly, product, production, production well, productional, productionism, productionize, productive, productively, productiveness, productivity, productor, productress, produit net, redoubt, redoubtable, redox, reduce, reduced, reducer, reducibility, reducible, reductio ad absurdum, reduction, reductionism, reductionist, reductive, reductor, redux, reeducate, reeducation, reintroduce, reproduce, reproducibility, reproducible, reproduction, reproductive, reproductively, retroduction, safe-conduct, secondary education, seduce, seducer, seducibility, seducible, seducingly, seduction, seductionist, seductive, seductively, seductiveness, semi-conductor, sexduction, sex education, spermaduct, subduct, subduction, subdue, superabduction, superconducting, superconductivity, superconductor, superinduce, superinduction, tax deduction, traduce, traducement, traducer, traducian, traducianism, traduction, transconductance, transduce, transducer, transduction, transductor, underproduction, uneducable, uneducated, unproduced, unproductive, unproductively, unreduced, unreducible, unreproductive, unseduced, unsubdued, vasoconductor, vector product, ventiduct, viaduct, vitelloduct
dulcis: sweet

billet doux (Fr), dolce, dolcissimo, doucet, douceur, dulcanara, dulce, dulcet, dulcian, dulcific, dulcification, dulciflorous, dulciflous, dulcify, dulciloquent, dulcimer, dulcin, Dulcinea, dulcite, dulcitone, dulcitude, edulcorate, edulcoration, edulcorator

dumus: bramble

dumetose, dumose

duo: two (duo); dubito: doubt, hesitate; dubius: doubtful; duplex: double

a deux (Fr), conduplicant, conduplicate, conduplication, deuce, deucedly, double, double agent, double-barreled, double-bogey, double-breasted, double-check, double cross, double date, double-dealing, double-density, double entendre (Fr), double entente (Fr), double meaning, doubleness, double-park, double play, double-quick, doubler, doublespeak, double standard, double star, doublet, double team, doubletone, doubloon, doublure, doubly, doubt, doubtable, doubter, doubtful, doubtfully, doubtfulness, doubtingly, doubtless, doubtlessly, dozen, dozener, dual, dualin, dualism, dualist, dualistic, duality, dualization, dualize, dually, dual-purpose, duant, dubiety, dubiosity, dubious, dubiously, dubiousness, dubitable, dubitant, dubitation, dubitative, dubitatively, dublet, duet, duettino, duettist, duetto, duo, duocameral, duodecennial, duocentenary, duodecade, duodecennial, duodecentennial, duodecimal, duodecimary, duodecimo, duodecuple, duodecyl, duodenal, duodenary, duodenate, duodene, duodenitis, duodenectomy, duodenum, duodrama, duoglot, duoliteral, duologue, duomachy, duopedal, duopoly, duopsony, duosecant, duotone, duotype, duplation, duple, duplet, duplex, duplexer, duplicability, duplicable, duplicand, duplicate, duplicating, duplication, duplicative, duplicator, duplicature, duplicidentate, duplicipennate, duplicitous, duplicity, duopoly, duply, duumvir, duumviral, duumvirate, half-dozen, indubitable, indubitably, indubitation, indubitative, misdoubt, pasodoble (Sp), redouble, reduplicate, redupication, reduplicative, sine dubio, undoubled, undoubted, undoubtedly

For duel see bellum.

Italicized words are from dubito. OLD derives dubito from only duo, not duo + habeo.
durus: hard

dour, dourly, dourness, durability, durable, durably, dura mater, duraine, dural, duramen, durance, durant, duration, durationless, durative, duress, duretto, Durex, duricrust, during, durum, endurability, endurable, endurably, endurance, endurant, endure, enduring, enduringly, enduringmess, enduro, extradural, indurate, induration, nondurable, obduracy, obdurate, obdurately, obdurateness, obduration, perdurability, perdurable, perdurably, perdure, radurization, subdural, superdural, thermoduric, unendurable

E
e-: from, out of

emission etc.

variation of ex- (q.v.)

Eboracum: York

New York, New Yorker, York, Yorkist, Yorkshire