Feeling slightly angry or irritated by something bothersome or troubling.
From Old French 'anoier' meaning 'to weary, trouble, be troublesome,' possibly from Late Latin 'inodiare' - 'in' (in) + 'odium' (hatred). The sense evolved from 'to harm' to 'to irritate' by the 14th century.
Annoyance is actually an important evolutionary emotion - it motivates us to remove or avoid persistent minor threats before they become major problems. Studies show that people who express annoyance appropriately tend to have better relationships because they address small issues before they fester.
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