Meaning : Weak and likely to lose consciousness.
Example :
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.
Synonyms : faint, light, lightheaded, swooning
Meaning : Lacking seriousness. Given to frivolity.
Example :
A dizzy blonde.
Light-headed teenagers.
Silly giggles.
Synonyms : airheaded, dizzy, empty-headed, featherbrained, giddy, lightheaded, silly