WordNet sense 1 (combining clever conception and facetious expression):

witty

WordNet sense 2 (characterized by jokes and good humor):

jocose, jocular

WordNet sense 3 (marked by or causing boisterous merriment or convulsive laughter):

hilarious

WordNet sense 4 (broadly or extravagantly humorous; resembling farce):

farcical, ludicrous

WordNet sense 5 (comical in an odd or whimsical manner):

droll

WordNet sense 6 (arousing or provoking laughter):

amusing, funny, laughable

WordNet sense 7 (cleverly amusing in tone):

facetious

WordNet sense 8 (full of or characterized by humor):

humourous