Words related to *were-o-

aver (v.)
late 14c., "assert the truth of," from Old French averer "verify, confirm, prove" (12c.), from Vulgar Latin *adverare "make true, prove to be true," from Latin ad "to" (see ad-) + verus "true" (from PIE root *were-o- "true, trustworthy"). From 1580s as "affirm with confidence." Related: Averred; averring.
Varangian (n.)
one of the Northmen who ravaged the Baltic coast in 9c. and by tradition overran part of western Russia and founded a dynasty there," 1788, from Medieval Latin Varangus, from Byzantine Greek Barangos, a name ultimately (via Slavic) from Old Norse væringi "a Scandinavian," properly "a confederate," from var- "pledge, faith," related to Old English wær "agreement, treaty, promise," Old High German wara "faithfulness" (from PIE root *were-o- "true, trustworthy"). Attested in Old Russian as variagi; surviving in Russian varyag "a peddler," Ukrainian varjah "a big strong man."
veracious (adj.)
"habitually disposed to speak truth," 1670s, from Latin verac-, stem of verax "according to truth, truthful," from verus "true" (from PIE root *were-o- "true, trustworthy") + -ous.
veracity (n.)
1620s, from French véracité (17c.), from Medieval Latin veracitatem (nominative veracitas) "truthfulness," from Latin verax (genitive veracis) "truthful," from verus "true" (from PIE root *were-o- "true, trustworthy").
verdict (n.)
1530s, alteration of Middle English verdit (c. 1300), "a jury's decision in a case," from Anglo-French verdit (Old French voirdit) "sworn testimony, affidavit; judgment, written record of a verdict," literally "a true saying or report," from ver, veir "true" (from PIE root *were-o- "true, trustworthy") + dit, past participle of dire "to say" (from PIE root *deik- "to show," also "pronounce solemnly"). Spelling influenced by Medieval Latin verdictum "a verdict."
veridical (adj.)
"speaking truth," 1650s, from Latin veridicus "truth-telling, truthful," from verum "truth," neuter of verus "true" (from PIE root *were-o- "true, trustworthy") + dic-, stem of dicere "to speak" (from PIE root *deik- "to show," also "pronounce solemnly"). Probably based on French véridique. Related: Veridically.
verify (v.)
early 14c., from Old French verifier "substantiate, find out the truth about" (14c.), from Medieval Latin verificare "make true," from Latin verus "true" (from PIE root *were-o- "true, trustworthy") + combining form of facere "to make" (from PIE root *dhe- "to set, put").
verisimilitude (n.)
"appearance of truth or reality, likelihood," c. 1600, from French verisimilitude (1540s), from Latin verisimilitudo "likeness to truth," from veri, genitive of verum, neuter of verus "true" (from PIE root *were-o- "true, trustworthy") + similis "like, resembling, of the same kind" (see similar). Related: Verisimilar.
verism (n.)
"the theory that art and literature should strictly reproduce truth," 1892, from Italian verismo, from vero "truth," from Latin verus "true" (from PIE root *were-o- "true, trustworthy") + -ismo, Italian form of -ism.
veritas (n.)
Latin, literally "truth, truthfulness," from verus "true" (from PIE root *were-o- "true, trustworthy"). Latin phrase in vino veritas (1590s in English; "in wine, truth," that is, "the truth comes out when one has been drinking") is attributed to Pliny the Elder, though there is a Greek version of it.