1. N-UNCOUNT : oft with poss
Annoyance is the feeling that you get when someone makes
you feel fairly angry or impatient.
▶ To her annoyance the stranger did not go away.
=irritation  

2. N-COUNT : usu sing
An annoyance is something that makes you feel angry or impatient.
▶ Inconsiderate neighbours can be more than an annoyance.

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