UK:*UK and possibly other pronunciationsUK and possibly other pronunciations/ˈɪrɪteɪtɪd/US:USA pronunciation: IPA and respellingUSA pronuncation: IPA/ˈɪrɪˌteɪtɪd/ ,USA pronunciation: respelling(iri tā′tid)

From the verb irritate: (⇒ conjugate)
irritated is: Click the infinitive to see all available inflections
v pastverb, past simple: Past tense--for example, "He saw the man." "She laughed."
v past pverb, past participle: Verb form used descriptively or to form verbs--for example, "the locked door," "The door has been locked."

WordReference Random House Learner's Dictionary of American English © 2020
ir•ri•tat•ed /ˈɪrɪˌteɪtɪd/USA pronunciation   adj. 
  1. annoyed;
    made impatient:I soon became irritated by her grouchiness.
  2. showing signs of irritation:the baby's irritated skin.

WordReference Random House Unabridged Dictionary of American English © 2020
ir•ri•tat•ed  (iri tā′tid),USA pronunciation adj. 
  1. angered, provoked, or annoyed.
  2. inflamed or made raw, as a part of the body.
irri•tat′ed•ly, adv. 
  • irritate + -ed2 1585–95

WordReference Random House Learner's Dictionary of American English © 2020
ir•ri•tate /ˈɪrɪˌteɪt/USA pronunciation   v.,  -tat•ed, -tat•ing. 
  1. to cause (someone) to have a feeling of impatience or anger;
    annoy:[+ object]Her whining really irritates me.
  2. to cause (someone to have) a feeling of itching or other irritation on the skin or on a part of the body: [no object]That chemical irritates if it gets on your skin.[+ object]Harsh soap irritates her skin.

WordReference Random House Unabridged Dictionary of American English © 2020
ir•ri•tate  (iri tāt′),USA pronunciation v.,  -tat•ed, -tat•ing. 
  1. to excite to impatience or anger;
  2. Physiologyto excite (a living system) to some characteristic action or function.
  3. Pathologyto bring (a body part) to an abnormally excited or sensitive condition.

  1. to cause irritation or become irritated.
irri•ta′tor, n. 
  • Latin irrītātus, past participle of irrītāre to arouse to anger, excite, aggravate, equivalent. to irritā- verb, verbal stem + -tus past participle suffix
  • 1525–35
    • 1.See corresponding entry in Unabridged vex, chafe, fret, gall;
      nettle, ruffle, pique;
      incense, enrage, infuriate, inflame.
      Irritate, exasperate, provoke mean to annoy or stir to anger. To
      irritate is to excite to impatience or angry feeling, often of no great depth or duration:to irritate by refusing to explain an action.To
      exasperate is to irritate to a point where self-control is threatened or lost:to exasperate by continual delays and excuses.To
      provoke is to stir to a sudden, strong feeling of resentful anger as by unwarrantable acts or wanton annoyance:to tease and provoke an animal until it attacks.

Collins Concise English Dictionary © HarperCollins Publishers::
irritate /ˈɪrɪˌteɪt/ vb
  1. to annoy or anger (someone)
  2. (transitive) to stimulate (an organism or part) to respond in a characteristic manner
  3. (transitive) to cause (a bodily organ or part) to become excessively stimulated, resulting in inflammation, tenderness, etc
Etymology: 16th Century: from Latin irrītāre to provoke, exasperate

ˈirriˌtator n
'irritated' also found in these entries (note: many are not synonyms or translations):
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