• The idiom "on cloud nine" is used to describe a state of extreme happiness, euphoria, or elation.
The Meaning: When someone is "on cloud nine," they feel like they are floating on air because something wonderful has happened (e.g., getting a promotion, winning a prize, or falling in love).
Why the others are wrong:
A). Often absent: This is sometimes confused with being "away," but doesn't fit this phrase.
C). Frequently daydreaming: This is better described by the idiom "head in the clouds."
D). Always busy: This would be described as "having your hands full."
