Feeling or showing great happiness and excitement. She felt giddy with joy after hearing the good news.
Having a sensation of whirling and a tendency to fall or stagger; dizzy. He felt giddy after spinning around in circles for too long.
Frivolous and lighthearted; lacking seriousness. The giddy conversation was filled with laughter and jokes.
Causing or characterized by a sensation of whirling or dizziness; dizzying. He drew back from the giddy height of the cliff.