versatile.adjective
competent in many things; that can be turned and moved around 
versatility-noun

viable.adjective
capable of success or continuing effectiveness; practicable (a viable plan; a viable national economy); possible; able to take root and grow; able to live; capable of living, developing
viability, viability-nouns
viably.adverb

vivid, vivider, vividest.adjectives
full of life; lively; bright; intense; brilliant; striking – said of colors and light; perceived as bright and distinct; brilliant: a vivid star; having intensely bright colors (a vivid tapestry); having a very high degree of saturation (a vivid purple); full of the vigor and freshness of immediate experience; evoking lifelike images within the mind; heard, seen, or felt as if real (a vivid description); graphic; active in forming lifelike images: a vivid imagination
vividly.adverb
vividness-noun

volatile.adjective
changeable; fickle; quickly evaporating

vaccinate.transitive verb
to inoculate with a specific vaccine-(a preparation of weakened or dead disease causing bacteria introduced into the body to produce immunity {resistance or protection against a specified disease} to a specific disease by causing the formation of antibodies-{a protein produced in and by the body in response to contact of the body with an antigen [a substance which causes the production of an antibody] which has the specific capacity to neutralize [to make ineffective] it}) in order to prevent or lessen the the effect of some disease 
vaccination.noun
the act of vaccinating 
vaccinization.noun
repeated vaccination with the same vaccine until the virus has no further effect 

veracity.noun
truthfulness; honesty; accuracy of statement; accordance with truth; that which is true 
veracious.adjective
speaking truly; habitually truthful; honest; true; accurate 

verify, verified, verifying, verifies.transitive verbs
to prove the truth of by demonstration, evidence or testimony; substantiate; to determine or test the truth or accuracy of, as by comparison, investigation, or reference (science conducts experiments to verify hypotheses); confirm
verifier.noun
verifiable, verificative.adjectives
verification.noun
verifying or being verified

vector.noun-and.adjective
a quantity that has magnitude and direction and that is commonly represented by a directed line segment whose length represents the magnitude and whose orientation in space represents the direction; a sequence of genetic material (as a transposon or the genome of a bacteriophage) used to introduce specific genes into the genome of an organism; a carrier; a course or compass direction especially of an airplane; an organism (as an insect) that transmits a pathogen; pollinator 
vectorial.adjective
vectorially.adverb

veer, veered, veering, veers.verbs
intransitive verb senses.to turn aside from a course, direction, or purpose; swerve; to change direction or course; to shift clockwise in direction
transitive verbs-veered, veering, veers
transitive verb senses.to direct to a different course
veeringly.adverb
veer.noun
a change in direction; a swerve
synonyms.swerve

virus.noun
a non cellular micro-organism, only visible under an electron microscope, that infects the cells of plants, animals and bacteria, and can only survive and reproduce within such cells; causes and transmits infectious diseases. Viruses are the nano equivalent to garbage eaters. What are called 'viruses' appear to be chemical poisoning of cells causing them to clump together as they are injured and are dying from chemicals, heavy metals, pesticides, toxic foods and water, electromagnetic radiation causing cellular damage, etc. No peer reviewed scientific evidence has ever seen an isolated infected cell infecting other cells; no 'virus' has been isolated which would have proven its existence as a disease causing entity.

veritable.adjective
being truly so called; real or genuine
veritableness.noun
veritably.adverb

vacuous.adjective
devoid of matter; empty; lacking intelligence; stupid; devoid of substance or meaning; inane; devoid of expression; vacant; lacking serious purpose or occupation; idle
vacuously.adverb
vacuousness.noun

vacuum.noun,.plural.vacuums or vacua
absence of matter; a space empty of matter; a state of emptiness; a void (for much of the twentieth century, space was visualized as a near vacuum, however the astronomical reality now being discovered, is actually quite different); a vacuum cleaner
vacuum.adjective
of or relating to, or used to create a vacuum; containing air or other gas at a reduced pressure; operating by means of suction or by maintaining a partial vacuum
vacuum, vacuumed, vacuuming, vacuumes.transitive and intransitive verbs 
to clean with or use a vacuum cleaner

valence, valency.nouns;.plural-vallences, vallencies
the combining capacity of an atom or a radical determined by the number of electrons that it will lose, add, or share when it reacts with other atoms

vice.noun
an evil, degrading, or immoral practice or habit; a serious moral failing; wicked or evil conduct or habits; corruption; sexual immorality, especially prostitution; fault; a flaw or an imperfection; a defect

vise.also.vice.noun
a clamping device of metal or wood, usually consisting of two jaws closed or opened by a screw or lever, used in carpentry or metalworking to hold a piece in position
vised.also.viced, vising, vicing, vises, vices.transitive verbs
to hold or compress in or as if in a vise

venal.adjective
open to bribery; mercenary (a venal public official); capable of betraying honor, duty, or scruples for a price; corruptible; marked by corrupt dealings, especially bribery (a venal administration); obtainable for a price
venally.adverb

vendetta.noun.plural.vendettas
a very long and violent fight between two families or groups; a series of acts done by someone over a long period of time to cause harm to a disliked person or group (examples - he waged a personal vendetta against his rivals in politics, she claims that the police have a vendetta against her [that the police are deliberately and unfairly trying to cause trouble for her])

vilify, vilified, vilifying, vilifies.transitive verbs
to make vicious and defamatory statements about; malign
vilification, vilifier.nouns

voracious.adjective
consuming or eager to consume great amounts of food; ravenous; having or marked by an insatiable appetite for an activity or a pursuit; greedy (a voracious hoarder)
voraciously.adverb
voracity.or.voraciousness.noun

voilà.interjection
used to call attention to or express satisfaction with a thing shown or accomplished (mix the ingredients, chill, and—voilà!—a light, tasty dessert)

voluntary.adjective
arising from or acting on one's own free will (voluntary community work)
voluntary.noun,.plural.voluntaries
a volunteer
voluntarily.adverb
voluntariness.noun

voluntarism
the use of or reliance on voluntary action to maintain an institution, carry out a policy, or achieve an end; a theory or doctrine that regards the will as the fundamental.principle of the individual or of the universe
voluntarist.noun
voluntaristic.adjective

volunteer.noun
a person who performs or offers to perform a service of his or her own free will usually without pay 
volunteer, volunteered, volunteering, volunteers.verbs
transitive verb senses.to give or offer to give voluntarily: volunteered their services
intransitive verb senses.to perform or offer to perform a service of one's own free will; to do charitable or helpful work without pay