A disagreeable person is someone who is unpleasant, rude, and difficult to get along with. The crossword solutions for this term are 'PILL' (4 letters) and 'SOANDSO' (7 letters). PILL is an acronym for 'Pain In the Living Room, ' which is a phrase used to describe someone who is always causing trouble or making life difficult for those around them. SoandsO is a slang term for a person who is annoying and difficult to deal with.