Webster's Revised Unabridged Dictionary · 1913

Agonize

Agonize ({not transcribed}) , intransitive verb

[French agoniser, Late Latin agonizare, from Greek {not transcribed}. See Agony.]

1.
To writhe with agony; to suffer violent anguish.
To smart and agonize at every pore. — Pope
2.
To struggle; to wrestle; to strive desperately.

Agonize , transitive verb

To cause to suffer agony; to subject to extreme pain; to torture.
He agonized his mother by his behavior. — Thackeray