| Main Entry: | |
| Part of Speech: | verb |
| Definition: | endorse |
| Synonyms: | authorize, certify, confirm, corroborate, mark, password, seal, sign, signature, watchword |
| Main Entry: | underwrite |
| Part of Speech: | verb |
| Definition: | endorse, insure |
| Synonyms: | accede, agree to, angel*, approve, back, bankroll, collateral, consent, countersign, endow, finance, float, fund, guarantee, help, initial, okay*, pay, provide, provide financing, sanction, seal, secure, sign, sponsor, stake, subscribe, subsidize, support |
| Antonyms: | disapprove, invalidate, refuse, reject |
| Main Entry: | witness |
| Part of Speech: | verb |
| Definition: | testify; authenticate |
| Synonyms: | affirm, announce, argue, attest, be a witness, bear out, bear witness, bespeak, betoken, certify, confirm, corroborate, countersign, depone, depose, endorse, give evidence, give testimony, indicate, say under oath, sign, stand for, subscribe, vouch for |
| Antonyms: | deny, refute |