giddy
       adj 1: 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" [syn: dizzy,
               woozy, vertiginous]
       2: lacking seriousness; given to frivolity; "a dizzy blonde";
          "light-headed teenagers"; "silly giggles" [syn: airheaded,
           dizzy, empty-headed, featherbrained, light-headed,
           lightheaded, silly]
       [also: giddied, giddiest, giddier]