To be extremely happy or elated.
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To feel extremely happy, as if floating above everything.
When someone is on cloud nine, they’re in a state of pure joy — usually because something wonderful just happened.
It’s often used after great news, a romantic moment, or an exciting achievement.
"Walking on Air"
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Feel extremely happy and light, nearly identical but slightly more poetic
"On Top of the World"
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Feel very happy and proud of an achievement or success
"On Cloud Nine"
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Feel pure joy and extreme happiness about something wonderful