light-headed
adjective
1 light-headed
Weak and likely to lose consciousness:
— Light-headed with wine.
— Light-headed from lack of sleep.
synonyms: faint, light, lightheaded, swooning.
2 light-headed
Lacking seriousness; given to frivolity:
— Light-headed teenagers.
synonyms: airheaded, dizzy, empty-headed, featherbrained, giddy, lightheaded, silly.
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