gid ‧ dy /ˈɡɪdi/ BrE AmE adjective
[ Language: Old English ; Origin: gydig 'mentally ill' ]
1 . feeling slightly sick and unable to balance, because everything seems to be moving SYN dizzy :
Greg stared down from the seventh floor and began to feel giddy.
2 . feeling silly, happy, and excited, or showing this feeling
giddy with
Sheila felt giddy with excitement.
3 . giddy heights a situation in which you have a lot of success:
Although she had been quite a successful model, she had never reached the giddy heights of the Paris fashion world.
4 . old-fashioned silly and not interested in serious things:
Fiona’s very pretty but a bit giddy.
—giddily adverb
—giddiness noun [uncountable]