- Confidence
- Probable
- Formation
- Derivation
- First attested
- Plautus
- Ultimate origin
- Proto-Indo-European (*h₃reyH-)
Pronunciation
Forms
irrītō (present infinitive irrītāre, perfect active irrītāvī, supine irrītātum); first conjugation[1] Plautus has the old subjunctive irrītāssis for irrītāveris.[2][3]
Etymology
De Vaan explains it as a verb from in- and a participle Proto-Italic *rīto- (“stirred”), Proto-Indo-European *h₃riH-to- (“whirled, stirred”), from the root Proto-Indo-European *h₃reyH- (“to whirl, flow”).[4][5] A frequentative is possible only with haplology from *rītitāre.[4] Cognate with Sanskrit रीयते (rī́yate, “flows, whirls”), Ancient Greek ὀρῑ́νω (orī́nō, “to stir up”) and Old English rīd (“stream”).[4][2] Older dictionaries compared Ancient Greek ἐρεθίζω (erethízō, “to provoke”).[3]
Earliest recorded meaning
De Vaan dates it from Plautus, whose character warns that if he is provoked, the other will leave with broken loins.[4][2] Köbler dates Plautus c. 250–184 BC.[6]
Semantic evolution
It meant to move to anger, provoke, vex, then to excite to action or feeling, rouse, stimulate, and to awaken a state of mind, as the licence Cicero roused rather than repressed.[2] It also meant to aggravate a condition, as Ovid's rage that grows when checked, and in medicine to irritate a sensitive part, as Celsus' teeth.[2] Döderlein says lacessō challenges the reason and will of another, while irrītāre provokes the feelings to anger.[7]
English irritate was borrowed in the 1530s in the sense “to rouse”, and later took the meaning “to annoy”.[5]
Timeline
- c. 250–184 BC – Plautus uses it of provoking someone.[2][6]
- 81–43 BC – Cicero uses it of rousing licence.[2][6]
- 14–37 AD – Celsus uses it of irritating the teeth.[2][6]
- 1530s – English irritate is recorded.[5]
Meanings
Verb
- To provoke, anger, vex.[2]
- To rouse, stimulate.[2]
- To awaken (a feeling).[2]
- To aggravate (a condition).[2]
- (medicine) To irritate.[2]
Word family
- irrītābilis
- irrītāmen
- irrītāmentum
- irrītātiō
- irrītātor
- irrītātrīx
- irrītātus
- rītō
Related words
Usage notes
A different late verb irritō with short i, from irritus “void”, meant “to make void, invalidate”.[3][8]
References
- ^ a b c Wiktionary, the free dictionary, https://en.wiktionary.org
- ^ a b c d e f g h i j k l m Glare, P. G. W., ed. (2012), Oxford Latin Dictionary, 2nd ed., Oxford: Oxford University Press
- ^ a b c Lewis, Charlton T.; Short, Charles (1879), A Latin Dictionary, Oxford: Clarendon Press
- ^ a b c d de Vaan, Michiel (2008), Etymological Dictionary of Latin and the other Italic Languages, Leiden Indo-European Etymological Dictionary Series 7, Leiden; Boston: Brill
- ^ a b c Harper, Douglas. Online Etymology Dictionary, https://www.etymonline.com
- ^ a b c d Köbler, Gerhard (2010), Lateinisches Abkunfts- und Wirkungswörterbuch für Altertum und Mittelalter, online ed., koeblergerhard.de
- ^ Döderlein, Ludwig (1874), Döderlein’s Hand-book of Latin Synonymes, tr. H. H. Arnold, Andover: W. F. Draper
- ^ Gaffiot, Félix (2016), Dictionnaire latin-français, new ed. by Gérard Gréco et al. (Gaffiot 2016), online ed.
Cite this entry
“Irrito.” Etymologically, 16 Oct. 2026, etymologically.com/la/irrito. Accessed 16 Oct. 2026.
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