on cloud nine

Idioms  

1. Blissfully happy, as in Ever since he proposed to her, her parents have been on cloud nine. The exact allusion of nine in this term is unclear, and different figures, especially seven (perhaps alluding to seventh heaven), are sometimes substituted. [Colloquial; mid-1900s]

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Example Sentences

For new parents on cloud nine enjoying time with their baby after delivery, a hospital bill for thousands of dollars — even after insurance pays its share — can quickly bring them back down to earth.

From MarketWatch

Jesus was on cloud nine after two close-range finishes in the first half to help guarantee the Gunners a top eight finish.

From Barron's

Collins said she had been "floating around on cloud nine with the biggest secret smile on my face" since being informed of her character's return.

From BBC

“She is still on cloud nine,” says Katie Davis, Mary Louise’s mom.

From The Wall Street Journal

When Emma Davey met Ashley Southgate in 2015, she was on "cloud nine".

From BBC