1. (verb)confirm, corroborate, sustain, substantiate, support, affirm establish or strengthen as with new evidence or facts Synonyms: actualise, realise, abide, embody, verify, get, support, stomach, defend, plunk for, hold up, substantiate, keep going, actualize, back, have, avow, fend for, patronise, stick out, assert, back up, keep, digest, nurture, keep up, corroborate, endorse, validate, reassert, hold, confirm, bear out, incarnate, affirm, swan, subscribe, brook, indorse, body forth, tolerate, suffer, endure, stand, aver, maintain, prolong, nourish, sustain, realize, patronize, underpin, plump for, patronage, put up, swear, bear
2. (verb)validate, corroborate give evidence for Synonyms: formalize, substantiate, sustain, bear out, affirm, underpin, support, corroborate, confirm, validate, formalise
3. (verb)corroborate, underpin, bear out, support support with evidence or authority or make more certain or confirm Synonyms: digest, abide, tolerate, support, plunk for, hold up, endure, back, stick out, fend for, patronise, back up, keep going, put up, corroborate, endorse, validate, stomach, defend, confirm, bear out, affirm, subscribe, brook, indorse, suffer, stand, sustain, patronize, underpin, substantiate, hold, plump for, patronage, bear
Synonyms, Thesaurus & Antonyms of 'corroborate'
English Synonyms and Antonyms
1. corroborate Confirm (L. con, together, and firmus, firm) is to add firmness or give stability to. Both confirm and corroborate presuppose something already existing to which the confirmation or corrobo Synonyms: confirm, assure, fix, sanction, substantiate, corroborate, prove, settle, sustain, establish, ratify, strengthen, uphold Antonyms: abrogate, cancel, overthrow, shatter, upset, annul, destroy, shake, unsettle, weaken, condole with, console
Synonyms for corroborate 
