dizzy

make dizzy or giddy; "a dizzying pace"

having or causing a whirling sensation; liable to falling; "had a dizzy spell"; "a dizzy pinnacle"; "had a headache and felt giddy"; "a giddy precipice"; "feeling woozy from the blow on his head"; "a vertiginous climb up the face of the cliff"

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