foolish

adj.

[1]	senseless , incautious , imprudent , impolitic , indiscreet , unwise , injudicious , ill-considered , ill-advised , misguided , short-sighted , impetuous , headlong , rash , brash , reckless , hasty , heedless , unwary , foolhardy , thoughtless , mindless
[2]	nonsensical , anserine , dopy , stupid , asinine , dopey , goosey , inane , silly , goosy , gooselike , fatuous , fatuitous , jerky , dim-witted , scatterbrained , hare-brained , crazy , mad , insane , demented , irrational , erratic , unstable , crack-brained , feather-brained , bird-brained , simple-minded , light-headed , muddle-headed , numskulled/numbskulled , addle-pated , rattle-brained , bemused , confused , feeble-minded , moronic , idiotic , imbecilic , halfwitted , dull-witted , slow-witted , witless , brainless , empty-headed , blockheaded , boneheaded , thickheaded , obtuse , stolid , (Colloq) dumb , balmy/(Brit) barmy , loony , nuts , nutty , batty , dopey/dopy , soft (in the head) , dim , thick , dippy , dotty , dizzy , (Brit) potty , daft , (Slang) cuckoo , goofy , screwy , wacky
[3]	preposterous , ridiculous , absurd , irrational , illogical , unreasonable , ludicrous , wild