01 a. Disordered in the head; dizzy; feeling faint; delirious.
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1.
Disordered in the head; dizzy; feeling faint; delirious.
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2.
Thoughtless; heedless; volatile; unsteady; fickle; loose; lacking seriousness; given to frivolity; as, light-headed teenagers.
Syn.
faint, swooning, lightheaded. — Syn. -- airheaded, dizzy, empty-headed, featherbrained, giddy, lightheaded, silly.