loopy

absurd crazy insane kooky ludicrous nutty ridiculous silly wacky witless zany

asinine brainless cockamamy daffy daft dippy doltish dotty fantastic fatuous feebleminded half-baked half-witted harebrained idiotic ill-advised ill-considered imbecilic imprudent incautious indiscreet injudicious irrational jerky loony lunatic mad moronic nonsensical preposterous senseless short-sighted simple softheaded stupid tomfool unearthly unintelligent unreasonable unwise weak

balanced logical rational reasonable sane sensible serious wise