facetious Antonyms

stewpid unamusing serious-minded lowbrow woeful witless wistful tearful sorry sombre somber feather-brained humourless out of sorts baboso as exciting as watching paint dry not fun as dumb as a box of rocks very upset funny as a crutch as funny as a crutch unhumorous uncomic unsmiling solemn sober sincere grave glum genuine formal earnest dolorous dismal cheerless blue bitter graves hackney hackneyed serious sad plaintive pessimistic pensive morose lugubrious lame lachrymose humorless