airheaded(s = adj.all) dizzy, empty-headed, featherbrained, giddy, light-headed, lightheaded, silly - lacking seriousness; given to frivolity; "a dizzy blonde"; "light-headed teenagers"; "silly giggles"
lacking seriousness; given to frivolity; scatterbrained; stupid; simple-minded; as, airheaded teenagers. Contrasted with