Definition of annoy:
(v) :
to
disturb or
irritate, especially by continued or repeated acts; to bother with unpleasant deeds; to do something to upset or anger someone; to be
troublesome
"marc loved his sister, but when she annoyed him he wanted to switch her off."
(n) :
a feeling of
discomfort or
vexation caused by what one dislikes; that which causes such a feeling