1. (verb)back, endorse, indorse, plump for, plunk for, support be behind; approve of Synonyms: stake, digest, abide, tolerate, bear, support, plunk for, hold up, endure, back, stick out, second, fend for, patronise, back up, keep going, certify, corroborate, endorse, stomach, defend, confirm, bear out, stand, affirm, game, brook, indorse, subscribe, suffer, bet on, sustain, patronize, underpin, gage, substantiate, hold, plump for, patronage, put up, punt