WordNet sense 1 (an account of an amusing incident (usually with a punch line)):

funny story, funny remark, good story

WordNet sense 2 (affected by an impairment of normal physical or mental function):

ill

WordNet sense 3 (not as expected):

fishy, shady, suspect, suspicious, suspect

WordNet sense 4 (subject to question):

questionable

WordNet sense 5 (arousing or provoking laughter):

amusing, comic, comical, laughable, mirthful, risible

WordNet sense 6 (full of or characterized by humor):

humorous, humourous

WordNet sense 7 (beyond or deviating from the usual or expected):

curious, odd, peculiar, rum, rummy, singular

WordNet sense 8 (being definitely out of the ordinary and unexpected; slightly odd or even a bit weird):

strange, unusual