noun ·4 syllables ·Rare ·Advanced level

Definitions

Noun

1. 1
   The state or quality of being light-headed; dizziness or faintness; flightiness; wandering; delirium. uncountable

   "The lightheadedness passed once I lay down."

2. 2
   a frivolous lack of prudence wordnet
3. 3
   a reeling sensation; a feeling that you are about to fall wordnet

Synonyms

All synonyms

giddinessdizzinessdizzinessdrunkennessswimmingvertigo

Example

More examples

"Have you recently had any unexplained dizziness or lightheadedness?"

Etymology

From light-headed (adjective) (any sense) + -ness (suffix forming nouns).

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.