Early 17th century; earliest use found in Philemon Holland (1552–1637), translator. From post-classical Latin agonale from classical Latin agōn, in post-classical Latin sense ‘martyrdom’ + -āle<br>late 18th century. From agon + -al, after French agonal relating to a contest and its etymon post-classical Latin agonalis of or relating to a contest<br>late 19th century. Probably from French agonal from post-classical Latin agon death agony + French -al.