Synonyms of 'assure'

ascertain, avouch, back, certify, cheer, confirm, countersign, encourage, endorse, ensure, secure, sell, settle, sign, support, underwrite, vouch, warrant, vow, troth, testify, swear, state, stabilize, sponsor, sort out, solace, satisfy, relieve, reassure, promise, plight, pledge, persuade, nerve, nail down, insure, inspirit, inspire, hearten, guaranty, guarantee, fix, establish, embolden, ease, determine, depose, depone, decide, convince, console, comfort, clinch, cinch, bring round, bring over, book, bond, bolster, attest, asseverate, assert