Dizzier

adjective

1. Having a sensation of whirling, with a tendency to fall; giddy; feeling unbalanced or lightheaded.

   "I stood up too fast and felt dizzy."

2. Producing giddiness.

   "We climbed to a dizzy height."

3. Empty-headed, scatterbrained or frivolous; ditzy.

   "My new secretary is a dizzy blonde."