v. t.
I will give you a mouth and wisdom which all your adversaries shall not be able to gainsay nor resist. Luke xxi. 15. [ 1913 Webster ]
The just gods gainsay
That any drop thou borrow'dst from thy mother,
My sacred aunt, should by my mortal sword
Be drained. Shak. [ 1913 Webster ]
n. One who gainsays, contradicts, or denies. “To convince the gainsayers.” Tit. i. 9. [ 1913 Webster ]