light headed

/ˌlaɪtˈhɛdɪd/
adjective
  1. Feeling dizzy, faint, or as if you might fall, often due to illness, hunger, or lack of air.
    • The stuffy room made everyone feel light-headed and uncomfortable.
    • After standing up too quickly, she felt light-headed and had to sit down.
    • He became light-headed from not eating all day and needed some juice.
  2. Frivolous, silly, or lacking serious thought; not mentally focused.
    • His light-headed jokes were not appropriate for the serious meeting.
    • Don't be so light-headed about your responsibilities; this project matters.
    • She was feeling light-headed and carefree, laughing at everything.
Antonyms
What does "light headed" mean? | whatsthatwordmean | whatsthatwordmean