light-headedness

light–head·ed·ness

noun \ˈlīt-ˈhed-əd-nəs\

Definition of LIGHT-HEADEDNESS

: the condition of being dizzy or on the verge of fainting <dizziness or light–headedness, particularly when one arises to a standing position, is a predictable consequence of any medication tending to lower blood pressure—Harvard Medical School Health Letter>

—light–head·ed adjective