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be on cloud nine

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be on cloud nine

To be in a state of extreme happiness. Ever since Mary got her promotion at work, she's been on cloud nine. I don't think I've ever seen her happier!

See also: cloud, nine, on

be on cloud nine

  (informal)

to be very happy For a few days after I heard I'd got the job, I was on cloud nine.

See also: cloud, nine, on