v. i.
To smart and agonize at every pore. Pope. [ 1913 Webster ]
v. t. To cause to suffer agony; to subject to extreme pain; to torture. [ 1913 Webster ]
He agonized his mother by his behavior. Thackeray. [ 1913 Webster ]
adj.
v. t.
v. i. To act in opposition. [ 1913 Webster ]