Noun: lightheadedness 'lIt'he-dud-nus
- A reeling sensation; a feeling that you are about to fall
"The sudden lightheadedness caused him to grab onto the railing for support";
- dizziness, giddiness, vertigo, wooziness [informal]
- A frivolous lack of prudence
"Her lightheadedness in romantic matters often led to heartbreak"
Type of: heedlessness, mindlessness, rashness, symptom
Encyclopedia: Lightheadedness