There is no gainsaying his honesty.
In this none of the people gainsaid him.
A fact thus set down in substantial history cannot easily be gainsaid.
Waits, and will not be gainsaid.
No one ventured to gainsay the missionary, whose excited tone contrasted curiously with his naturally calm visage.
I hope you won't gainsay the fact that I have a 50% right to furnish the house, she said.