gain·say (gān-sā, gānsā′)
tr.v. gain·said (-sād, -sĕd), gain·say·ing, gain·says (-sāz, -sĕz)
1. To declare to be false; deny. See Synonyms at deny.
2. To oppose (someone), especially by contradiction: "She was going to fashion the end of her existence in her own way, and in this determination she would not be gainsaid" (Louis Auchincloss).
[Middle English gainsayen : gain-, against (from Old English gegn-) + sayen, to say (from Old English secgan; see SAY).]
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