giddy
US /ˈɡɪd.i/
UK /ˈɡɪd.i/

1.
having a sensation of whirling and a tendency to fall; dizzy.
:
•
She felt giddy after spinning around so quickly.
•
The height made him feel giddy.
2.
excitable and frivolous
:
•
The children were giddy with excitement on Christmas morning.
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She was in a giddy mood after receiving the good news.