velocity.noun,.plural.velocities
speed

viscid.adjective
thick and adhesive - used of a fluid (thick oil)
viscidity.or.viscidness.noun
viscidly.adverb

viscous.adjectives
having relatively high resistance to flow; viscid; thick
viscously.adverb
viscousness.noun

viscosity.noun,.plural.viscosities
the condition or property of being viscous

violet.noun
color – the hue of the short wave end of the visible spectrum, evoked in the human observer by radiant energy with wavelengths of approximately 380 to 420 nanometers

vociferous.adjective
making, given to, or marked by noisy and vehement outcry
vociferously.adverb
vociferousness.noun
synonyms.blatant, boisterous, strident, clamorous

vortices.noun,.plural.of vortex
vortex.noun,.plural.vortexes or vortices
a spiral motion of fluid within a limited area, especially a whirling mass of water or air that sucks everything near it toward its center

venerate, venerated, venerating, venerates.transitive verbs
to regard with respect, reverence, or heartfelt deference
venerator.noun
synonyms.revere
veneration.noun
the act of venerating; profound respect or reverence
venerational.adjective
synonym.honor

vary, varied, varying, varies.verbs
transitive verb use.to make or cause changes in the characteristics or attributes of; modify or alter; to give variety to; make diverse.(vary one's diet); to introduce under new aspects; express in a different manner (vary a musical tempo)
intransitive verb use.to undergo or show change (the temperature varied throughout the day); to be different; deviate.(vary from established patterns); differ; to undergo successive or alternate changes in attributes or qualities.(foliage varies with the seasons)
varyingly.adverb

various.adjective
of diverse.kinds.(for various reasons; unlike); different; being more than one; several; many sided; versatile.(a person of various skills; having a variegated nature or appearance
variously.adverb
variousness.noun

variety.noun,.plural.varieties
the quality or condition of being various or varied; diversity; a number or collection of varied things, especially of a particular group; an assortment (brought home a variety of snacks)

variation.noun
the act, process, or result of varying; the state or fact of being varied; difference; the extent or degree to which something varies (a variation of ten pounds in weight); something slightly different from another of the same type
variational.adjective

variable.adjective
likely to change or vary; subject to variation; changeable; inconstant; fickle; tending to deviate, as from a normal or recognized type; aberrant; having no fixed quantitative value
variable.noun
something that varies or is prone to variation
Mathematics.-.a quantity capable of assuming any of a set of values; a symbol representing such a quantity - for example, in the expression a2 + b2 = c2, a, b, and c are variables
variableness.noun
variably.adverb

voluble.adjective
marked by a ready flow of speech; fluent; talkative; verbal diarrhea
volubility or volubleness.noun
volubly.adverb

vestige.noun
a visible trace, evidence, or sign of something that once existed but exists or appears no more
vestigial.adjective
of, relating to, or constituting a vestige
Biology.–.occurring or persisting as a rudimentary or degenerate structure
vestigially.adverb

void.adjective
containing no matter; empty; not occupied; unfilled; completely lacking; devoid (void of understanding); empty; ineffective; useless; having no legal force or validity; null: a contract rendered void; a vacuum; a feeling or state of emptiness, loneliness, or loss
void, voided, voiding, voids.verbs
transitive use.to take out (the contents of something); empty; to excrete (body wastes); to leave; vacate; to make void or of no validity; invalidate (issued a new passport and voided the old one)
intransitive use.to excrete body waste
voider.noun

vibrant.adjective
pulsing or throbbing with energy or activity (the vibrant streets of a big city); vigorous, lively, and vital (a vibrant group that accomplished mush in helping the poor); exhibiting or characterized by rapid, rhythmic movement back and forth or to and fro; vibrating; produced as a result of vibration; resonant or resounding (the speaker's vibrancy had everyone enthused); relatively high on the scale of brightness (a vibrant hue)
vibrancy.or.vibrance.noun
vibrantly.adverb

virulent.adjective
bitterly hostile or antagonistic; hateful (virulent criticism); intensely.irritating, obnoxious, or harsh; extremely infectious, malignant, or poisonous; used of a pathogen
virulence.or.virulency.noun
virulently.adverb

vow.noun
an earnest promise to perform a specified act or behave in a certain manner, especially a solemn promise (take the vows of a nun); a declaration or an assertion
vow, vowed, vowing, vows.verbs
transitive verb use.to promise solemnly; pledge; promise
intransitive verb use.to make a vow; promise
vower.noun

vulnerable.adjective
susceptible to bruising; 
vulnerability.or.vulnerableness.noun
vulnerably.adverb

vapid.adjective
lacking liveliness, animation, or interest; dull (vapid conversation); lacking taste, zest, or flavor; flat (vapid beer); insipid
vapidity.or.vapidness.noun
vapidly.adverb

vogue.noun
the prevailing fashion, practice, or style; popular acceptance or favor; popularity (hoop skirts were once the vogue; nationalization was once in vogue but now hidden under corporate blankets created by governnment so as to appear arms length from their surreptitious takeovers)