Meaning

noun a state of peace agreed to between opponents so they can discuss peace terms

originFrom Middle English trewes, triwes, trues, plural of trewe, triewe, true (“faithfulness, assurance, pact”), from Old English trēowa, singularized plural of trēow, trȳw (“faith; pledge; agreement”), from Proto-West Germanic *treuwu, from Proto-Germanic *trewwō (compare Dutch trouw, German Treue, Danish tro, French trêve [< Germanic]), noun form of *triwwiz (“trusty, faithful”). More at true.

Etymology from Wiktionary, CC BY-SA 3.0