lightheaded

Definitions

Feeling dizzy, faint, or as if one might lose consciousness.

Lacking seriousness; frivolous or giddy.

Examples

I felt a bit lightheaded after standing up too quickly from my chair.

The intense heat of the afternoon sun made the hiker feel lightheaded and weak.

Synonyms

dizzy faint giddy woozy vertiginous unsteady swimming

Antonyms

steady stable balanced grounded clearheaded composed levelheaded