dizzy

(verb) make dizzy or giddy. Example: "A dizzying pace."

(adj) having or causing a whirling sensation; liable to falling. Synonyms: giddy, woozy, vertiginous. Examples: "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."

(adj) lacking seriousness; given to frivolity. Synonyms: airheaded, empty-headed, featherbrained, giddy, light-headed, lightheaded, silly. Examples: "A dizzy blonde." "Light-headed teenagers." "Silly giggles."