naysay

[ ney-sey ]
/ ˈneɪˌseɪ /

verb (used with object), nay·said, nay·say·ing.

to say nay to; deny; reject; oppose.

Origin of naysay

1765–75; nay + say1, or by back formation from naysayer
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019