D defs.my
Entry 1 sense Webster, 1913

Gainsay

/gān'-sāˌ/ · Gain·say · IPA /ˈɡeɪnˌseɪ/
01 v. t. To contradict; to deny; to controvert; to dispute; to forbid.
imp. & p. p. Gainsaid; p. pr. & vb. n. Gainsaying
  1. 1.
    To contradict; to deny; to controvert; to dispute; to forbid.
    “I will give you a mouth and wisdom which all your adversaries shall not be able to gainsay nor resist.” — Luke xxi. 15.
    “The just gods gainsay That any drop thou borrow'dst from thy mother, My sacred aunt, should by my mortal sword Be drained.” Shak.