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cloud nine
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noun Informal.
a state of perfect happiness (usually in the phrase on cloud nine).
QUIZ
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Which of the following nouns has an irregular plural form?
Origin of cloud nine
First recorded in 1955–60
Words nearby cloud nine
cloud grass, cloudland, cloud layer, cloudless, cloudlet, cloud nine, cloud over, Cloud Peak, cloud physics, cloud rack, clouds
Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022