gainsay
US /ˌɡeɪnˈseɪ/
UK /ˌɡeɪnˈseɪ/

1.
negar, contradizer
deny or contradict (a fact or statement)
:
•
The evidence was too strong to gainsay.
A evidência era muito forte para negar.
•
No one could gainsay her claim to the inheritance.
Ninguém podia contestar a sua reivindicação à herança.
2.
contrariar, opor-se a
speak against or oppose (someone)
:
•
It was useless to gainsay him, as he was determined to go.
Era inútil contrariá-lo, pois ele estava determinado a ir.
•
She was too polite to gainsay her elders.
Ela era muito educada para contrariar os mais velhos.