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Synonyms for testify

verb

  1. To demonstrate

    indicate, show, make evident; see prove.

  2. To bear witness

    affirm, give evidence, swear, swear to, attest, witness, give witness, give one's word, certify, warrant, depose, vouch, give the facts, stand up for, say a good word for.

  3. To declare

    assert, attest, claim; see declare 1.

See testify in Webster's New World Roget's A-Z Thesaurus II


verb
  1. To give evidence or testimony under oath:

    attest, swear, witness. (Law) depone, depose. Idioms: bear witness, take the stand. See law
  2. To confirm formally as true, accurate, or genuine:

    attest, certify, vouch (for), witness. Idiom: bear witness to. See affirm
  3. To assure the certainty or validity of.

    Also used with to: attest, authenticate, back (up), bear out, confirm, corroborate, evidence, justify, substantiate, validate, verify, warrant. See support, true
  4. To give grounds for believing in the existence or presence of:

    argue, attest, bespeak, betoken, indicate, mark, point to, witness. See show

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