Meaning of the word "up in the air" in English

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

up in the air

US /ʌp ɪn ðə ɛr/
UK /ʌp ɪn ðə ɛr/
"up in the air" picture

Idiom

1.

uncertain or undecided

Example:
Our travel plans are still up in the air.
The future of the project is completely up in the air.
Learn This Word at Lingoland