Noah Webster's Dictionary 1. (v. i.) To writhe with agony; to suffer violent anguish. 2. (v. i.) To struggle; to wrestle; to strive desperately. 3. (v. t.) To cause to suffer agony; to subject to extreme pain; to torture.

Multi-Version Concordance Agonize (1 Occurrence) Jude 1:3 Beloved, all diligence using to write to you concerning the common salvation, I had necessity to write to you, exhorting to agonize for the faith once delivered to the saints, (YLT)