silly

dazed from or as if from repeated blows

knocked silly by the impact

slaphappy with exhaustion

inspiring scornful pity

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

lacking seriousness; given to frivolity

a dizzy blonde

light-headed teenagers

ludicrous, foolish

gave me a cockamamie reason for not going

wore a goofy hat

a word used for misbehaving children

don't be a silly