double check

Main Entry:
corroborate [v. kuh-rob-uh-reyt; adj. kuh-rob-er-it]
Part of Speech: verb
Definition: back up information, story
Synonyms: approve, authenticate, bear out, certify, check on, check out, check up, confirm, declare true, document, double check, endorse, establish, give nod, justify, okay, prove, ratify, rubber-stamp, strengthen, substantiate, support, sustain, validate, verify
Notes: corroborate is used in a narrower context, usually by way of providing support for testimony in a legal proceeding; confirm is to lend support to a much wider array of things
Antonyms: contradict, deny, disallow, disclaim, refute, reject
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
Notes: corroborate is used in a narrower context, usually by way of providing support for testimony in a legal proceeding; confirm is to lend support to a much wider array of things
Antonyms: annul, cancel, contradict, destroy, disprove, invalidate, oppose, veto, void
Main Entry: reiterate
Part of Speech: verb
Definition: say or do again
Synonyms: come again, ditto*, double-check, echo, go over again, ingeminate, iterate, play back, recap, recapitulate, recheck, rehash, renew, repeat, reprise, resay, restate, retell, rewarn, say again
Notes: iterate means 'do or say something again' and reiterate is the result of the erroneous addition of a redundant prefix; iterate is used more for repeated actions like mathematical functions and reiterate tends to be used for things one says
Antonyms: take back
Main Entry: verify
Part of Speech: verb
Definition: confirm, validate
Synonyms: add up, attest, authenticate, bear out, certify, check, check out, check up, check up on, corroborate, debunk, demonstrate, document, double-check, establish, eye*, eyeball, find out, hold up, justify, make certain, make sure, pan out, peg, prove, settle, size up, size*, stand up, substantiate, support, test, try
Antonyms: discredit, disprove, invalidate
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