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Dictionary definition for: Lightheaded

1. (s) weak and likely to lose consciousness; "suddenly felt faint from the pain" "was sick and faint from hunger" "felt light in the head" "a swooning fit" "light-headed with wine" "light-headed from lack of sleep"

2. (s) lacking seriousness; given to frivolity; "a dizzy blonde" "light-headed teenagers" "silly giggles"

WordNet 2.1 Copyright Princeton University. All rights reserved.