Antonym of GAINSAY

Answer: Option A

Gainsay : deny or contradict (a fact or statement).
Affirm : state emphatically or publicly.
Reject : dismiss as inadequate, unacceptable, or faulty.
Appreciate : recognize the full worth of.
Lose : be deprived of or cease to have or retain (something).

Antonym of Gainsay is Affirm