gainsayer


gain·say

G0009500 (gān-sā′, gān′sā′)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).]
gain·say′er n.