IPA: /ɡeɪnˈseɪ/
KK: /ɡeɪnˈseɪ/
To say that something is not true or to disagree with something.
She did not gainsay his claim about the event.
Past: gainsaid
Past Participle: gainsaid
Gainsay → It is formed from "gain" (from Old English *gægn*, meaning to gain or obtain) and "say" (from Old English *secgan*, meaning to say or declare). The word "gainsay" means to declare against or deny something that has been said or asserted.
Think of someone 'gaining' the ability to 'say' something against another's statement — that's why gainsay means to deny or contradict.