Dedication: 3/15/05

Vesuvius: Vesuvius

Vesuvian, Vesuvius

veto, vetitum: forbid

pocket veto, vetitive, veto, vetoist

vetus: old

inveteracy, inveterate, inveterately, inveterateness, VA, vet, vet (v), veteran, veterinarian, veterinary, vetter, vetting, war veteran

vexillum: flag

vexil, vexillary, vexillation, vexillator, velillology, vexillum

vexo (1): bother

unvexed, vex, vexation, vexatious, vexaciously, vexaciousness, vexatory, vexed, vexedly, vexer

via: road; obvius: in the way

bivious, bivium, bon voyage (Fr), convey, conveyable, conveyal, conveyance, conveyancer, conveyor, conveyorize, convoy, convoyance, convoyer, deviability, deviance, deviant, deviantly, deviate, deviation, deviative, deviator, devious, deviously, envoy, envoyship, imperviable, impervious, imperviously, imperviousness, invoice, multivious, nontrivial, obviate, obviation, obviative, obvious, obviously, obviousness, perveance, pervious, perviousness, previous, previously, quadrivial, quadrivium, reconvey, standard deviation, trivia, trivial, trivialism, triviality, trivialization, trivialize, trivially, trivium, undeviating, unvoyageable, via, viaduct, Via Lactea, viale (It), viatic, viaticum, viator, voyage, voyager, voyageur, worm conveyer

N.B. The names Beatrice and Beatrix may derive from bonus or via.
vibex: stripe

vibex (pl. vibices)

vibro (1): vibrate

multivibrator, vibe(s), vibracular, vibraculoid, vibraculum, vibraharp, vibrancy, vibrant, vibrantly, vibraphone, vibrate, vibratile, vibration, vibrational, vibrationally, vibrationless, vibrato, vibrator, vibratory, vibrio, vibriocidal, vibrion, vibrionic, vibriosis, vibrissae, vibromassage, vibrometer, vibromotor, vibronic, vibrophone, vibroscope, vibrotactile

OED rejects veer as a derivative of vibro.
vicia: vetch

vetch, vetchling

(vicis): interchange

veep, vicar, vicarage, vicarate, vicaress, vicar general, vicariad, vicarial, vicarian, vicariant, vicariate, vicarious, vicariously, vicariousness, vicarish, vicarism, vicarship. vice (assistant), vice-admiral, vice-admiralty, vice-chancellor, vice-presidency, vice-president, vice-queen, vice-rector, vice-regal, vice-regency, viceregent, viceroy, viceroyalty, vice versa, vice-warden, vicissitude, vicissitudinous, viscount

victima: sacrificial animal

vic, victim, victimization, victimize, victimizer, victimless, victimology

vicus: village

vicinage, vicinal, vicinism, vicinity, -wich, Norwich, wick

W3 supports the italicized words; OED does not. See villa.