Definition of irritation in English:


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  • 1The state of feeling annoyed, impatient, or slightly angry.

    • ‘much to my irritation, Chris fell asleep’
    annoyance, infuriation, exasperation, vexation, indignation, impatience, crossness, displeasure, resentment, gall, chagrin, pique
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    1. 1.1A thing that annoys or irritates someone.
      • ‘the minor irritations of life’
      irritant, source of irritation, source of vexation, annoyance, source of annoyance, thorn in someone's flesh, thorn in someone's side, pinprick, pest, bother, trial, torment, plague, inconvenience, nuisance, bugbear, menace
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  • 2Inflammation or other discomfort in a body part caused by reaction to an irritant substance.

    • ‘some chemicals cause a direct irritation to the skin leading to dermatitis’
    1. 2.1Biology The stimulation of an organism, cell, or organ to produce an active response.



/ˌirəˈtāSH(ə)n/ /ˌɪrəˈteɪʃ(ə)n/


Late Middle English from Latin irritatio(n-), from the verb irritare (see irritate).