Ab (ā before consonants)

faciō, facere, fēcī, factus/a/um = to do, make

[affair, affect, affected, affection, artifact, artifice, artificial, benefaction, benefactor, beneficent, beneficiary, benefit, calefacient, calorifacient, certificate, certify, chafe, chauffeur, clarify, coefficient, confection, confetti, confit, counterfeit, defacto, defeat, defect, defective, deficient, deficit, diffect, difficacious, difficult, dignify, disaffected, discomfit, diversify, dormifacient, edification, edifice, edify, effect, effectual, efficacious, efficacy, efficient, effigy, exemplify, ex post facto, facient, facile, facilitate, facility, facsimile, fact, faction, factious, factitious, factor, factory, factotum, factual, faculty, falsify, fashion, feasance, feasibility, feasible, feat, feature, febrifacient, feckless, fetish, forfeit, fortify, fructify, glorify, gratify, horrific, horrify, identify, imperfect, imperfection, indemnify, infect, infection, intensify, ipso facto, justify, liquefy, liquifacient, magnificence, magnifico, magnify, malefic, maleficence, malfeasance, manufacture, misfeasance, modify, mollify, mortify, munificence, munificent, nonfeasance, notify, nullify, office, official, officiate, officious, olfactory, orifice, pacific, pacifist, pacify, parturifacient, perfect, perfecto, personify, personification, petrify, pluperfect, pontiff, pontificate, prefect, proficiency, proficient, profit, prolific, putrefy, putrefaction, qualify, ramify, ramification, rarefy, ratify, rectify, refectory, rubefacient, sacrifice, sanctify, satisfaction, satisfy, savoir-faire, scientific, significant, signify, simplify, solidify, somnifacient, sorbefacient, specific, specify, stratify, stupefacient, stupefy, suffice, sufficient, superficial, surface, surfeit, terrific, terrify, testify, typify, unify, verify, vilify, vivify]

factiō, factiōnis F = team, racing company [affair, affect, affected, affection, artifact, artifice, artificial, benefaction, benefactor, beneficent, beneficiary, benefit, calefacient, calorifacient, certificate, certify, chafe, chauffeur, clarify, coefficient, confection, confetti, confit, counterfeit, defacto, defeat, defect, defective, deficient, deficit, diffect, difficacious, difficult, dignify, disaffected, discomfit, diversify, dormifacient, edification, edifice, edify, effect, effectual, efficacious, efficacy, efficient, effigy, exemplify, ex post facto, facient, facile, facilitate, facility, facsimile, fact, faction, factious, factitious, factor, factory, factotum, factual, faculty, falsify, fashion, feasance, feasibility, feasible, feat, feature, febrifacient, feckless, fetish, forfeit, fortify, fructify, glorify, gratify, horrific, horrify, identify, imperfect, imperfection, indemnify, infect, infection, intensify, ipso facto, justify, liquefy, liquifacient, magnificence, magnifico, magnify, malefic, maleficence, malfeasance, manufacture, misfeasance, modify, mollify, mortify, munificence, munificent, nonfeasance, notify, nullify, office, official, officiate, officious, olfactory, orifice, pacific, pacifist, pacify, parturifacient, perfect, perfecto, personify, personification, petrify, pluperfect, pontiff, pontificate, prefect, proficiency, proficient, profit, prolific, putrefy, putrefaction, qualify, ramify, ramification, rarefy, ratify, rectify, refectory, rubefacient, sacrifice, sanctify, satisfaction, satisfy, savoir-faire, scientific, significant, signify, simplify, solidify, somnifacient, sorbefacient, specific, specify, stratify, stupefacient, stupefy, suffice, sufficient, superficial, surface, surfeit, terrific, terrify, testify, typify, unify, verify, vilify, vivify]

fāma, fāmae F. = fame, report, reputation; rumor [affability, affable, confess, confession, defamation, defame, fable, fabulous, fame, famous, fate, fateful, ill-fated, ineffable, infamous, infamy, infancy, infant, infantile, infantilism, infantry, preface, prefatory, profess, profession, professionalism, professor]

famēs, famis F. = hunger (gen. pl. = famium) [famine, famished, famish]

familia, familiae F. = family, the household: including slaves, married and unmarried children [extrafamilial, familiar, familiarity, familiarize, familiarly, family, family get-together, famulus, materfamilias (s), matresfamilias (pl), paterfamilias, patresfamilias, unfamiliar]

familiāris, familiāre = of the family (including slaves, married and unmarried children) [extrafamilial, familiar, familiarity, familiarize, familiarly, family, family get-together, famulus, materfamilias (s), matresfamilias (pl), paterfamilias, patresfamilias, unfamiliar]

fās (indeclinable) Neuter. = right (especially divine or moral right, as opposed to legal right) [affability, affable, confess, confession, defamation, defame, fable, fabulous, fame, famous, fate, fateful, ill-fated, ineffable, infamous, infamy, infancy, infant, infantile, infantilism, infantry, preface, prefatory, profess, profession, professionalism, professor]

fātum, fātī N. = fate, destiny [affability, affable, confess, confession, defamation, defame, fable, fabulous, fame, famous, fate, fateful, ill-fated, ineffable, infamous, infamy, infancy, infant, infantile, infantilism, infantry, preface, prefatory, profess, profession, professionalism, professor]

fatuus, fatua, fatuum = stupid, silly [fatuous, fatuity, ignis fatuus, infatuate, infatuation]

faveō, favēre, fāvī, fautūrus/a/um (+ dat.) = favor, support (+ dative) [disfavor, disfavored, disfavorer, favor (s), favors (pl); favour (British), favorable, favorableness, favorably, favored, favoredness, favorer, favoress, favoring, favorite, favorites; favourite (British), favoritism, favorless, unfavorable, unfavorableness, unfavorably]

Februārius, Februāria, Februārium = (of) February

fēlix, fēlicis = lucky, happy [Felicia, felicific, Felicitas habet multos amicos. = “Prosperity has many friends.”, felicitate, felicitation, felicitous, felicitously, felicity, Felix, infelicitous, infelicitously, infelicity, Sapientia felicitas. = “Wisdom is happiness.”]

fēmina, fēminae F = woman [anti-feminist, antifeminist; anti-feminism, antifeminism, bonne femme, covert-feme, defeminize, defeminization, defeminized, ecofeminism, ecofeminist, effeminacy, effeminate, effeminated, effeminately, effeminateness, effeminating, effeminize, effeminized, effeminizing, female, femalely, femality, feme sole, feme sole trader, femina, feminacy, feminal, feminality, feminary, feminate, feminazi, femineity, feminicity, feminie, feminile, feminility, feminine, feminineness, femininism, femininitude, femininity, feminity, femininize, feminism, feminist, feministic, femininistic, feminization, feminize, feminized, feminizing, feminoid, feminine, feminophobia, femiphobia, femiphobic, femme, femme fatale, femocrat, fiminary, pendum femininum]

fenestra, fenestrae F = window [fenestra, defenestrate, defenestration]

ferculum, ferculī N = dish, tray [related to ferō, ferre, tulī, lātus/a/um = carry, bear, endure; report, say [ablate, ablating, ablated, ablation, ablative, ablator, adulation, afferent, aquifer, auriferous, circumference, collate, collation, collatron, confer, conferee, conference, conferred, conifer, coniferous, correlate, correlation, crucifer, cruciferous, defer, deference, deferment, deferred, deferring, differ, difference, different, differential, differentiate, dilate, dilation, dilatory, effer, efferent, elate, elated, elation, ferriferous, ferry, fertile, fertility, fetiferous, fructiferous, herbiferous, infer, inference, interfere, interference, lactiferous, legislate, legislation, legislator, legislature, Lucifer, oblation, odiferous, offer, offering, prefer, preferable, prelate, prelation, proffer, refer, referee, reference, referenda (plural), referendum (singular), referent, referral, relate, relation, relationship, relative, relativity, sanguiferous, somniferous, suffer, sufferable, sufferance, superlative, transfer, transferable, translatable, translate, translation, translator, vociferate, vociferous]]

fēriae, fēriārum F pl. = holidays, festival days

fēriātus, fēriāta, fēriātum = on holiday, celebrating a holiday

ferō, ferre, tulī, lātus/a/um = carry, bear, endure; report, say [ablate, ablating, ablated, ablation, ablative, ablator, adulation, afferent, aquifer, auriferous, circumference, collate, collation, collatron, confer, conferee, conference, conferred, conifer, coniferous, correlate, correlation, crucifer, cruciferous, defer, deference, deferment, deferred, deferring, differ, difference, different, differential, differentiate, dilate, dilation, dilatory, effer, efferent, elate, elated, elation, ferriferous, ferry, fertile, fertility, fetiferous, fructiferous, herbiferous, infer, inference, interfere, interference, lactiferous, legislate, legislation, legislator, legislature, Lucifer, oblation, odiferous, offer, offering, prefer, preferable, prelate, prelation, proffer, refer, referee, reference, referenda (plural), referendum (singular), referent, referral, relate, relation, relationship, relative, relativity, sanguiferous, somniferous, suffer, sufferable, sufferance, superlative, transfer, transferable, translatable, translate, translation, translator, vociferate, vociferous]

ferōx, ferōcis = fierce [ferocious, ferocity, fierce, feral]

ferrum, ferrī N = iron, sword [ferreous, ferric, ferriferous, ferroalloy, ferrochromium, ferroconcrete, ferrocyanide, ferromagnetic, ferromanganese, ferrometer, ferrotherapy, ferrotype, ferrous, ferruginous, ferrule]

ferula, ferulae F. = cane [ablate, ablating, ablated, ablation, ablative, ablator, adulation, afferent, aquifer, auriferous, circumference, collate, collation, collatron, confer, conferee, conference, conferred, conifer, coniferous, correlate, correlation, crucifer, cruciferous, defer, deference, deferment, deferred, deferring, differ, difference, different, differential, differentiate, dilate, dilation, dilatory, effer, efferent, elate, elated, elation, ferriferous, ferry, fertile, fertility, fetiferous, fructiferous, herbiferous, infer, inference, interfere, interference, lactiferous, legislate, legislation, legislator, legislature, Lucifer, oblation, odiferous, offer, offering, prefer, preferable, prelate, prelation, proffer, refer, referee, reference, referenda (plural), referendum (singular), referent, referral, relate, relation, relationship, relative, relativity, sanguiferous, somniferous, suffer, sufferable, sufferance, superlative, transfer, transferable, translatable, translate, translation, translator, vociferate, vociferous]

fessus/a/um = tired

festīnō, festīnāre, festīnāvī, festīnātus/a/um = to hurry, rush [festinate, Festina lente = Hasten slowly!]

fīdēlis, fīdēle = faithful, loyal [affidation, affidavit, bona fide, confidant, confidante, confide, confidence, defiance, diffidence, diffident, fealty, fideism, fidelity, Fido, fiduciary, infidel, infidelity, mala fide, minimifidian, perfidious, perfidy, semper fidelis = Semper Fi, unconfident]

fīdus/a/um = reliable, trustworthy, trusting in (+ dative) [affidation, affidavit, bona fide, confidant, confidante, confide, confidence, defiance, diffidence, diffident, fealty, fideism, fidelity, Fido, fiduciary, infidel, infidelity, mala fide, minimifidian, perfidious, perfidy, semper fidelis = Semper Fi, unconfident]

fīlia, fīliae F = daughter (dative/ablative plural: fīliābus) fīliola, fīliolae F = little daughter (dative/ablative plural: fīliolābus) [affiliate, affiliation, filial, filiality, filiate, filiation, filicidal, filiety]

fīlius, fīliī M = son fīliolus, fīliolī M = little son [affiliate, affiliation, filial, filiality, filiate, filiation, filicidal, filiety]

fīnis, fīnis M = end, finish fīnēs, fīnium, M pl. = boundaries, territories [final, finish, finality, ad infinitum; ad inf. = ad infin. = “Without limit; endlessly,” affinity, confine, confinement, definable, definably, define, definite, definitely, definition, definitionary, definitionaries, definitive, definitively, fina, final, finale, finalism, finalist, finality, finalization, finalize, finally, finance, financial, financially, financier, fine, finery, finesse, finish, finisher, finite, finitely, finiteness, finitude, indefinable, indefinably, indefinite, indefinitely, infinite, infinitely, infinitesimal, infinitesimally, infinitive, infinitude, infinity, paraffin, refine, refinement, refiner, refinery, refinish, refinisher, superfine, undefined, unfinished]

finiō, finīre, finīvī, finītus/a/um = to finish [final, finish, finality, ad infinitum; ad inf. = ad infin. = “Without limit; endlessly,” affinity, confine, confinement, definable, definably, define, definite, definitely, definition, definitionary, definitionaries, definitive, definitively, fina, final, finale, finalism, finalist, finality, finalization, finalize, finally, finance, financial, financially, financier, fine, finery, finesse, finish, finisher, finite, finitely, finiteness, finitude, indefinable, indefinably, indefinite, indefinitely, infinite, infinitely, infinitesimal, infinitesimally, infinitive, infinitude, infinity, paraffin, refine, refinement, refiner, refinery, refinish, refinisher, superfine, undefined, unfinished]

fiō, fīerī, factus/a/um sum = to become, be made ( used as the passive of faciō) [NOTE especially the –fy words: affair, affect, affected, affection, artifact, artifice, artificial, aquafy, benefaction, benefactor, beneficent, beneficiary, benefit, calefacient, calorifacient, certificate, certify, chafe, chauffeur, clarify, coefficient, confection, confetti, confit, counterfeit, defacto, defeat, defect, defective, deficient, deficit, defy, diffect, difficacious, difficult, dignify, disaffected, discomfit, diversify, dormifacient, edification, edifice, edify, effect, effectual, efficacious, efficacy, efficient, effigy, exemplify, ex post facto, facient, facile, facilitate, facility, facsimile, fact, faction, factious, factitious, factor, factory, factotum, factual, faculty, falsify, fashion, feasance, feasibility, feasible, feat, feature, febrifacient, feckless, fetish, forfeit, fortify, fructify, glorify, gratify, horrific, horrify, identify, imperfect, imperfection, indemnify, infect, infection, intensify, ipso facto, justify, liquefy, liquifacient, magnificence, magnifico, magnify, malefic, maleficence, malfeasance, manufacture, misfeasance, modify, mollify, mortify, munificence, munificent, nonfeasance, notify, nullify, office, official, officiate, officious, olfactory, orifice, pacific, pacifist, pacify, parturifacient, perfect, perfecto, personify, personification, petrify, pluperfect, pontiff, pontificate, prefect, proficiency, proficient, profit, prolific, putrefy, putrefaction, qualify, ramify, ramification, rarefy, ratify, rectify, refectory, rubefacient, sacrifice, sanctify, satisfaction, satisfy, savoir-faire, scientific, significant, signify, simplify, solidify, somnifacient, sorbefacient, specific, specify, stratify, stupefacient, stupefy, suffice, sufficient, superficial, surface, surfeit, terrific, terrify, testify, typify, unify, verify, vilify, vivify]

firmus/a/um = strong [affirm, affirmable, affirmation, affirmative, affirmatively, confirm, confirmable, confirmation, confirmative, confirmed, firm, firmament, infirm, infirmary, infirmities, infirmity, reaffirm, reaffirmation]

Flaccus, Flaccī M = Flaccus (the father of Quintus; literally, “floppy-ears”)

flōs, flōris M. = flower [albiflorous, defloration, defloresce, deflorescence, deflorescent, deflower, divergenti florous, effloresce, efflorescence, efflorescent, ethnoflora, extrofloral, flora, Flora (The Roman goddess of flowers), florabunda, floral, Floralia, Florence, florescence, florescent, floricide, floricultural, floriculture,floriculturist, florid, Florida, floridity, floridly, floriferous, florimania, florin, floriparous, florish, florist, floristics, florivorous, florivore, florivory, florology, floromancy, florula, flour, flourish, flower, flowery, geminiflorous, grandiflora, inflora, infloresce, inflorescence, inflorescent, macroflora, macrofloral, macrofloria, meioflora, microflora, microfloral, multiflorous, pauciflorous, pluriflorous, radiciflorous, ramiflorous, reflorescence, reflorescent, uniflorous]

fluctus, fluctūs M. = wave [affluence, affluent, afflux, circumfluent, confluence, confluent, conflux, costae fluctuantes, diffluent, effluence, effluent, effluvium, efflux, fluctuant, fluctuate, fluctuation, flue, fluency, fluent, fluently, fluid, fluidic, fluidics, fluidity, fluidize, fluidness, flume, flush, fluvial, fluvioglacial, fluviology, flux, “in flux”, fluxation, fluxible, fluxion, fluxmeter, influence, influent, influential, influentially, influenza, influx, mellifluous, mellifluously, mellifluent, refluence, refluent, reflux, acid reflux disease, superfluity, superfluous, superfluously, superfluousness]

flūmen, flūminis N. = river [affluence, affluent, afflux, circumfluent, confluence, confluent, conflux, costae fluctuantes, diffluent, effluence, effluent, effluvium, efflux, fluctuant, fluctuate, fluctuation, flue, fluency, fluent, fluently, fluid, fluidic, fluidics, fluidity, fluidize, fluidness, flume, flush, fluvial, fluvioglacial, fluviology, flux, “in flux”, fluxation, fluxible, fluxion, fluxmeter, influence, influent, influential, influentially, influenza, influx, mellifluous, mellifluously, mellifluent, refluence, refluent, reflux, acid reflux disease, superfluity, superfluous, superfluously, superfluousness]

fluō, fluere, fluxī, fluxus/a/um = to flow [affluence, affluent, afflux, circumfluent, confluence, confluent, conflux, costae fluctuantes, diffluent, effluence, effluent, effluvium, efflux, fluctuant, fluctuate, fluctuation, flue, fluency, fluent, fluently, fluid, fluidic, fluidics, fluidity, fluidize, fluidness, flume, flush, fluvial, fluvioglacial, fluviology, flux, “in flux”, fluxation, fluxible, fluxion, fluxmeter, influence, influent, influential, influentially, influenza, influx, mellifluous, mellifluously, mellifluent, refluence, refluent, reflux, acid reflux disease, superfluity, superfluous, superfluously, superfluousness]

fluvius, fliuviī M = river [affluence, affluent, afflux, circumfluent, confluence, confluent, conflux, costae fluctuantes, diffluent, effluence, effluent, effluvium, efflux, fluctuant, fluctuate, fluctuation, flue, fluency, fluent, fluently, fluid, fluidic, fluidics, fluidity, fluidize, fluidness, flume, flush, fluvial, fluvioglacial, fluviology, flux, “in flux”, fluxation, fluxible, fluxion, fluxmeter, influence, influent, influential, influentially, influenza, influx, mellifluous, mellifluously, mellifluent, refluence, refluent, reflux, acid reflux disease, superfluity, superfluous, superfluously, superfluousness]

foedus, foeda, foedum = filty, disgusting [fetid, fetor, foetid]

foedus, foederis N. = treaty [confederacy, confederal, confederate, confederate rose, confederation, federal, federalism, federalist, federalization, federalize, Federal Reserve Bank, federate, federated, federation, federative; Related derivatives: affidation, affidavit, bona fide, confidant, confidante, confide, confidence, defiance, diffidence, diffident, fealty, fideism, fidelity, Fido, fiduciary, infidel, infidelity, mala fide, minimifidian, perfidious, perfidy, semper fidelis = Semper Fi, unconfident ]