The property of feeling lightheaded; dizzyness or faintness.(noun)
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Use "light-headedness" in a sentence
"While feeling "dizzy" over a great poem is a perfectly fine response by individual readers, at some point one's light-headedness has to be dispelled for further discussion of the poem to take place."
"And again and again until he lay back, his parched throat eased, the muzzy light-headedness receding under the sweet tang of the icy water."
"A wave of light-headedness passed over Cara, and for a moment she swayed on her feet."