Quick definitions from WordNet (up in the air)
▸ adjective: very uncertain ("Left everything up in the air")
▸ adjective: not yet determined ("Plans are still up in the air")
▸ Words similar to up in the air
▸ Usage examples for up in the air
▸ Popular nouns described by up in the air
▸ Words that often appear near up in the air
▸ Rhymes of up in the air
▸ Invented words related to up in the air
▸ adjective: very uncertain ("Left everything up in the air")
▸ adjective: not yet determined ("Plans are still up in the air")
▸ Words similar to up in the air
▸ Usage examples for up in the air
▸ Popular nouns described by up in the air
▸ Words that often appear near up in the air
▸ Rhymes of up in the air
▸ Invented words related to up in the air