LATIN DICTIONARYLexicon Latīnum
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“irritate” in Latin

The English word irritate itself goes back to Latin irrītō, through irrītātus.

Riddle & Arnold A Copious and Critical English–Latin Lexicon, 1864

irritate
To make angry, aliquem iratum reddere: iram, bilem, or stomachum alicui movere: concitare (to excite; e.g., animum injuriis, Cic.): ☞ irritare aliquem absolutely, in the sense of “irritating” is not classical; but irritare aliquem or alicujus animum ad aliquid (e.g., animos ad bellum, etc.) is. To be irritated, iratum fieri; ira incendi; (ira) excandescere: he employed all possible means of irritating the soldiers, quibuscunque irritamentis poterat, iras militum acuebat (Liv.).
IMPROPR., To irritate wounds, vulnera inflammare; the nerves, motum excitare in nervis (☞ Cic., De Or., 1, 46, 202: nimium or vehementiorem might be added).

Quick answer

What is the Latin word for irritate?
The usual Latin words for “irritate” are īra, bīlis, concitō. The right choice depends on the sense; see the distinctions below.

Entry from J. E. Riddle & T. K. Arnold, A Copious and Critical English–Latin Lexicon (rev. C. Anthon, New York: Harper, 1864), digitised by Fergus J. P. Walsh, CC BY-SA 4.0; Latin markup adapted by latindictionary.co.