senseless, stupid, or foolish.

insane; crazy.

Scot. merry; playful; frolicsome.

adjective

brainy , bright , intelligent , smart , understanding

adjective

absurd , asinine , bedlamite , bonkers , cracked * , crackers , daffy * , demented , deranged , dopey * , flaky * , foolish , fried * , giddy , half-baked * , idiotic , inane , insane , in the ozone , lunatic , mad , mental * , nuts , nutty * , off the wall , out of one’s gourd , ridiculous , screwy * , silly , simple , touched , unbalanced , unhinged * , unsound , wacky , whacko , witless , brainsick , crazy , disordered , distraught , dotty , maniac , maniacal , mentally ill , moonstruck , off , wrong , barmy , cracked , cuckoo , daffy , fried , frolicsome , goofy , imbecile , loco , loony , nutty , stupid , wild