craven: [13] Craven originally meant simply ‘defeated’, and only gradually came to have the pejorative sense ‘cowardly’. It probably came from Old French cravante ‘defeated’, the past participle of the verb cravanter, which in turn came via Vulgar Latin *crepantāre from Latin crepāre; this meant ‘creak, rattle, crack’ (hence the English technical term crepitation [17]) but also secondarily ‘burst’ or ‘break’. => crepitation, crevice, decrepit[craven etymology, craven origin, 英语词源]