Collocations for giddy - adj.

be, feel
become, come over all (BrE,informal), get
My mum came over all giddy and had to sit down.

leave sb, make sb
Steep stairs may leave you giddy and faint.

positively
a little, slightly, etc.

from
He felt giddy from the sleeping pill.

with
I was giddy with the heat.
She was giddy with anticipation about spending two months with her father.

Giddy is used with these nouns:
excitement, height, whirl