- with unrestrained high spirits; gleefully: She blushed and giggled giddily like a child, squealing, “He smiled at me!”
- in a way that causes or is affected by vertigo; dizzily: The shrine is giddily perched atop a cliff amid medieval fortifications.
- in a frivolous or silly way: School boards in those days were spending giddily to keep up with every fad.
