sheepheaded

childish crazy frivolous idiotic inappropriate irresponsible ludicrous nonsensical pointless preposterous ridiculous simple stupid

empty irrational

asinine balmy brainless dippy dizzy empty-headed fatuous featherbrained flighty foolhardy harebrained ignorant illogical immature imprudent inane inconsistent meaningless muddle-headed nitwitted puerile senseless simpleminded unintelligent unreasonable unwise vacuous witless

intelligent mature reasonable responsible sensible serious smart wise

practical