Someone who bothers, annoys, or causes trouble; a person who is pestering or irritating.
From 'bother' (possibly from Irish Gaelic 'boithrín' meaning path, or from Old English 'badder'), combined with agent suffix '-er' to mean 'one who bothers.'
The word 'bother' mysteriously entered English in the 1600s with unclear origins—linguists suspect Irish influence but can't prove it, making it one of English's unsolved etymological mysteries!
Complete word intelligence in one call. Free tier — 50 lookups/day.