plausible (adj.)youdaoicibaDictYouDict[plausible 词源字典]
1540s, "acceptable, agreeable," from Latin plausibilis "deserving applause, acceptable," from plaus-, past participle stem of plaudere "to applaud" (see plaudit). Meaning "having the appearance of truth" is recorded from 1560s. Related: Plausibly.[plausible etymology, plausible origin, 英语词源]