Definition of avouch in English:



[with object]archaic
  • Affirm or assert.

    ‘the locket contains ringlets which he avouches to be relics of a Spanish girl’
    • ‘We might be disposed to question its authenticity, it if were not avouched by the full evidence.’
    • ‘Ask Wall Street and they would enthusiastically avouch that they are quite up to the task - more than able and willing.’
    • ‘Paulina and her friends being gone, I scarce could avouch that I had really seen them.’
    assert, maintain, state, aver, affirm, contend, argue, insist, hold, profess, move, claim, allege, avow, vow, swear, attest, testify, certify
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Late 15th century: from Old French avochier, from Latin advocare ‘summon in defence’, from ad- ‘to’ + vocare ‘to call’.