The Collaborative International Dictionary
Light-headedness
Light-headed \Light"-head`ed\ (l[imac]t"h[e^]d`[e^]d), a.
-
Disordered in the head; dizzy; feeling faint; delirious. [WordNet sense 1]
--Walpole.Syn: faint, swooning, lightheaded.
-
Thoughtless; heedless; volatile; unsteady; fickle; loose; lacking seriousness; given to frivolity; as, light-headed teenagers. [WordNet sense 2] ``Light-headed, weak men.''
--Clarendon.Syn: airheaded, dizzy, empty-headed, featherbrained, giddy, lightheaded, silly. [1913 Webster + WordNet 1.5] -- Light"-head`ed*ness, n.
Wiktionary
light-headedness
n. The property of feeling lightheaded; dizzyness or faintness.
Usage examples of "light-headedness".
Both the light-headedness and my stomach were letting me know of my low energy state.