To reel; to whirl.

To make dizzy or unsteady.

In his existential psychoanalysis of Baudelaire, Sartre wrongfully accuses that great idler of "bending over his own freedom and becoming giddy at the sight of the bottomless abyss." For those of us who practice avoidance (as a via negativa to the blissful state of idleness), giddiness in this sense is a very real and present danger: Instead of being creatively "dizzy," the giddy person is just in a tizzy. In the etymological sense of the word - it's German for "possessed by God" - the term "enthusiastic" is preferred. See: AVOIDER, DIZZY, FLIGHTY.

having or causing a whirling sensation; liable to falling; "had a dizzy spell"; "a dizzy pinnacle"; "had a headache and felt giddy"; "a giddy precipice"; "feeling woozy from the blow on his head"; "a vertiginous climb up the face of the cliff"

lacking seriousness; given to frivolity; "a dizzy blonde"; "light-headed teenagers"; "silly giggles"