Meaning of the word "be over the moon" in English

What does "be over the moon" mean in English? Explore the meaning, pronunciation, and specific usage of this word with Lingoland.

be over the moon

US /bi ˈoʊvər ðə muːn/
UK /bi ˈəʊvə ðə muːn/
"be over the moon" picture

Idiom

to be extremely happy or delighted about something

Example:
She was over the moon when she heard the news of her promotion.
The kids will be over the moon if we take them to Disneyland.