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certify [ sur-tuh-fahy ]
Main Entry: certify
Part of Speech: verb
Definition: declare as true
Synonyms: accredit, approve, ascertain, assure, attest, authenticate, authorize, aver, avow, commission, confirm, corroborate, endorse, guarantee, license, notify, okay, profess, reassure, rubber-stamp, sanction, show, state, swear, testify, validate, verify, vouch, witness
Antonyms: contradict, counteract, deny, disavow, discredit, invalidate, reject, repudiate
Main Entry: accredit
Part of Speech: verb
Definition: give authorization or control
Synonyms: appoint, approve, authorize, certify, commission, empower, enable, endorse, entrust, guarantee, license, okay, recognize, sanction, vouch for
Antonyms: deny, disapprove, reject
Main Entry: acknowledge
Part of Speech: verb
Definition: verbally recognize authority
Synonyms: accede, accept, acquiesce, agree, allow, approve, attest to, certify, defend, defer to, endorse, grant, own, ratify, recognize, subscribe to, support, take an oath, uphold, yield
Antonyms: forswear, ignore, refuse, renounce, repudiate
Main Entry: affirm
Part of Speech: verb
Definition: declare the truth of something
Synonyms: assert, asseverate, attest, aver, avouch, avow, certify, cinch, clinch, confirm, cross heart, declare, guarantee, have a lock on, ice*, insist, lock up, maintain, nail down, okay, predicate, profess, pronounce, put on ice, ratify, repeat, rubber-stamp, say so, set, state, swear, swear on bible, swear up and down, testify, vouch, witness
Antonyms: deny, negate, nullify, veto
Main Entry: allow
Part of Speech: verb
Definition: permit an action
Synonyms: accord, accredit, admit, approve, authorize, be big, be game for, bear, brook, certify, commission, consent, empower, endorse, endure, favor, free up, give a blank check, give carte blanche, give leave, give permission, give the go-ahead, give the green light, go along with, grant permission, hear of, hold with, indulge, let, license, live with, oblige, okay, pass, pass on, put up with, recognize, release, sanction, sit still for, stand, suffer, support, take kindly to, tolerate, warrant
Antonyms: deny, disallow, disapprove, forbid, prohibit, protest, refuse, reject, resist, withstand
Main Entry: approve
Part of Speech: verb
Definition: allow, authorize
Synonyms: accede, accept, accredit, acquiesce, advocate, affirm, agree, assent, authorize, back*, bless*, boost, buy, buy into, certify, charter, concur, confirm, consent, dig*, empower, encourage, endorse, establish, get behind, give go-ahead, go along with, groove*, hats off to, lap up, license, maintain, make law, make valid, mandate, okay, permit, pronounce, push for, ratify, recommend, sanction, seal, second, sign, sign off on, stump for, subscribe to, support, thumbs up, uphold, validate
Antonyms: disallow, disapprove, invalidate, oppose, refuse, reject
Main Entry: assure
Part of Speech: verb
Definition: promise
Synonyms: affirm, attest, aver, brace up, buck up, certify, confirm, give one's word, guarantee, pledge, swear, vouch for, vow
Main Entry: attest
Part of Speech: verb
Definition: affirm, vouch for
Synonyms: adjure, announce, argue, assert, asservate, authenticate, aver, bear out, bear witness, certify, confirm, corroborate, countersign, declare, demonstrate, display, exhibit, give evidence, indicate, prove, ratify, seal, show, substantiate, support, sustain, swear, testify, uphold, verify, warrant, witness
Antonyms: deny
Main Entry: authenticate
Part of Speech: verb
Definition: establish as real, genuine
Synonyms: accredit, attest, authorize, bear out, certify, confirm, corroborate, endorse, guarantee, justify, prove, substantiate, validate, verify, vouch, warrant
Main Entry: confirm
Part of Speech: verb
Definition: ratify, validate, prove
Synonyms: affirm, approve, attest, authenticate, back, bear out, bless, buy, certify, check, check out, circumstantiate, corroborate, debunk, double-check, endorse, establish, explain, give green light, give high sign, give stamp of approval, give the go-ahead, give the nod, justify, lap up, make good, make sure, okay, rubber-stamp, sanction, settle, sign, sign off on, size up, subscribe, substantiate, support, thumbs up, underpin, uphold, verify, vouch, warrant, witness
Antonyms: annul, cancel, contradict, destroy, disprove, invalidate, oppose, veto, void
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