/ əˈnɔɪəns; NAmE / noun
1.
[ U ] the feeling of being slightly angry
SYN irritation :
He could not conceal his annoyance at being interrupted.
Much to our annoyance , they decided not to come after all.
She stamped her foot in annoyance .
2.
[ C ] something that makes you slightly angry
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WORD ORIGIN
late Middle English : from Old French anoiance , from anoier (verb), anoi (noun), based on Latin in odio in the phrase mihi in odio est it is hateful to me.