Synonyms: empty-headed, featherbrained, giddy, light-headed, lightheaded, dizzy, silly, airheaded
Definition: lacking seriousness; given to frivolity
Usage: a dizzy blonde; light-headed teenagers; silly giggles
Similar words: frivolous
Definition: not serious in content or attitude or behavior
Usage: a frivolous novel; a frivolous remark; a frivolous young woman
Synonyms: swooning, faint, light, light-headed, lightheaded
Definition: weak and likely to lose consciousness
Usage: suddenly felt faint from the pain; was sick and faint from hunger; felt light in the head; a swooning fit; light-headed with wine; light-headed from lack of sleep
Definition: affected by an impairment of normal physical or mental function
Usage: ill from the monotony of his suffering