HackerVoca

valid : just, sound, logical, cogent, effective, binding, legal
vanish : disappear, end, cease, fade
variable : changeable, inconstant, fickle, unsteady
variety* : adj. diversity, kind, sort, species, type
various : diverse, varied
vary* : change, alter, diversify, transform, transmute
vast : extensive, immense, huge, enormous, gigantic,
colossal, prodigious, stupendous
velocity* : speed, pace, rapidity, celerity
vengeance / / noun

1 [uncountable] something violent or harmful that you do to someone in order to punish them for harming you, your family etc: Hamlet is driven by a desire for vengeance after his father is killed.

2 with a vengeance if something is done with a vengeance, it is done much more than is expected or normal: The music started up again with a vengeance. : avenging, revenge