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"
