Webster's Revised Unabridged Dictionary · 1913

Exasperate

Exasperate , adjective

[Latin exasperatus, past participle of exsasperare to roughen, exasperate; ex out (intens.) + asperare to make rough, asper rough. See Asperity.]

Exasperated; imbittered. [Obsolete] — Shakespeare
Like swallows which the exasperate dying year Sets spinning. — Mrs. Browning

Exasperate , transitive verb

1.
To irritate in a high degree; to provoke; to enrage; to excite or to inflame the anger of; as, to exasperate a person or his feelings.
To exsasperate them against the king of France. — Addison
2.
To make grievous, or more grievous or malignant; to aggravate; to imbitter; as, to exasperate enmity.
To exasperate the ways of death. — Sir T. Browne