silly

a word used for misbehaving children; "don't be a silly"

ludicrous, foolish; "gave me a cockamamie reason for not going"; "wore a goofy hat"; "a silly idea"; "some wacky plan for selling more books"

lacking seriousness; given to frivolity; "a dizzy blonde"; "light-headed teenagers"; "silly giggles"

inspiring scornful pity; "how silly an ardent and unsuccessful wooer can be especially if he is getting on in years"- Dashiell Hammett

dazed from or as if from repeated blows; "knocked silly by the impact"; "slaphappy with exhaustion"