Open English Wordnet
Nouns
(n)irritation, annoyance, vexation, botherationthe psychological state of being irritated or annoyed
(n)annoyance, bother, botheration, pain, infliction, pain in the neck, pain in the ass, nuisancesomething or someone that causes trouble; a source of unhappiness“a bit of a bother”, “he's not a friend, he's an infliction”, “washing dishes was a pain in the neck before we got a dish washer”