gan-sa, gan'-sa (anteipon, antilego, "to say or speak against"): Occurs as anteipon, "not .... able to withstand or to gainsay" (Lu 21:15); as antilego, "a disobedient and gainsaying people" (Ro 10:21); 2 Esdras 5:29, contradicebant; Judith 8:28, anthistemi; 12:14, antero; Additions to Esther 13:9, antitasso; 1 Macc 14:44, anteipon.
⇒See the definition of gainsay in the KJV Dictionary
Gainsayer, antilego (Tit 1:9, "exhort and convince (the Revised Version (British and American) "convict") the gainsayers").
Gainsaying, antilogia (Jude 1:11, "the gain-saying of Korah"); antilogia is Septuagint for meribhah (Nu 20:13); anantirrhetos, "without contradiction" (Ac 10:29, "without gainsaying").
The Revised Version (British and American) has "gainsaid" for "spoken against" (Ac 19:36); "not gainsaying" for "not answering again" (Tit 2:9); "gainsaying" for "contradiction" (Heb 12:3).
W. L. Walker