gainsay
US /ˌɡeɪnˈseɪ/
UK /ˌɡeɪnˈseɪ/

1.
contradecir, negar
deny or contradict (a fact or statement)
:
•
The evidence was too strong to gainsay.
La evidencia era demasiado fuerte para contradecirla.
•
No one could gainsay her claim to the inheritance.
Nadie podía contradecir su reclamo sobre la herencia.
2.
contradecir, oponerse a
speak against or oppose (someone)
:
•
It was useless to gainsay him, as he was determined to go.
Era inútil contradecirlo, ya que estaba decidido a ir.
•
She was too polite to gainsay her elders.
Era demasiado educada para contradecir a sus mayores.