Idiom: On cloud nine (meaning, examples, pronunciation)

"Be on cloud nine" means "to be extremely happy."

Example #1: Peter was on cloud nine for months after he won the lottery.

Example #2: When Jessica was born I was on cloud nine.

Example #3: Ever since John got his promotion at work, he's been on cloud nine.

Example #4: Maria was on cloud nine to see her husband back from a long trip.