Word Unit: valid-, val-, vale-, -vail, -valent, -valence (Latin: valere, to be strong, to be well, to be worth; strong; power, strength; and "fare well" [go with strength])
Word Unit: vall- + (Latin: wall, rampart; row or line of stakes)
Word Unit: valvulo-, valvul- (Latin: a doorlike structure in a passageway that hinders or prevents the reflux or flowing back of its contents)
Word Unit: vandal- (Latin: originally, wanderer; then destroyer; destroy, deface, harm)
Word Unit: Vandals Reputation (Were the Vandals as bad as some people have indicated?)
Word Unit: vane-, vani- (Latin: to vanish, to disappear, to fade, to become empty)
Word Unit: vapori-, vapor-, vapo- (Latin: steam, mist, very small drops of water)
Word Unit: vari- (Latin: different, diversity, change, changing)

Inter-related cross references, directly or indirectly, involving word units meaning "another, other, different, alternating, varied, changing": ali-; allo-; alter-; allelo-; hetero-; mut-; poikilo-; reciproc-.

Word Unit: varic-, varico-; varix- (Latin: twisted and swollen vein)
Word Unit: vas-, vaso-, vasi- + (Latin: vessel [blood, other fluids]; tube, duct)

Inter-related cross references, directly or indirectly, involving "blood" word units: angi-; apheresis; -emia; hemo-; hemoglobin-; phleb-; sangui-; vascul-.

Word Unit: vascul-, vasculo- (Latin: a vessel or vessels; including, tubes, ducts, or canals that convey and circulate fluids; such as, blood, lymph, or sap, through the bodies of animals or plants)

Inter-related cross references, directly or indirectly, involving "blood" word units: angi-; apheresis; -emia; hemo-; hemoglobin-; phleb-; sangui-; vas-.

Word Unit: vast-, wast- (Latin: waste, lay waste completely; from vastare, "to make empty, to lay waste", from vastus, "empty, waste, desert")
Word Unit: vati- + (from Latin vates, seer, prophet; sooth-sayer; prophesy, prophecy; which should not be confused with Vatican, "Pope's palace in Rome" or Vaticanism, "doctrine of papal supremacy and infallibility")

Cross references of word families that are related directly, or indirectly, to: "divination, diviner; seer, soothsayer, prophecy, prophesy, prophet": augur-; auspic-; fa-, fate; Fates in action; futur-; -mancy; omen; -phemia; sorc-, sorcery.

Word Unit: veget-, vege- (Latin: animating, enlivening; vigorous, vigor, active; to be alive, activity, to quicken; then a quickening action of growing; a specific sense of "plant cultivated for food, edible herb, or root" is first recorded in 1767; the differences between the meanings from its original links with "life, liveliness" was completed in the early twentieth century, when vegetable came to be used for an "inactive person".)
Word Unit: veh-, vect- (Latin: quantity having magnitude and direction; carrier, bearer, conveyer; from the stem of vehere, "to carry, to convey, to cart")
Word Unit: vela-, vel-, veal- (Latin: covering, velare, "to cover"; a veil)

Cross references of word families that are related directly, or indirectly, to: "appear, visible, visual, manifest, show, see, reveal, look": blep-; delo-; demonstra-; opt-; -orama; pare-; phanero-; phant-; pheno-; scopo-; spec-; video-, visuo-.

Word Unit: veloci-, veloc-, velo- (Latin: fast, speed, swift, rapid)
Word Unit: ven-, vent-, veni-, ventu- (Latin: come, coming)
Word Unit: venat-, vener- (Latin: to hunt; hunting)

Here is an attempt to clarify the different "hunt, hunting" and the "love, fondness" terms: vener-, "love, sexual references"; Names for Groups or "Venery names"; Introduction to Venereal and Other Group Terms or "Venery names"; Venereal Terms or "names for a variety of groups".

Word Unit: vend- (Latin: to sell, to give [i.e. offer] for sale)