up in the air. idiom. Add to word list. If a matter is up in the air, it is uncertain, often because other matters have to be decided first: The whole future of the project is still up in the air. SMART Vocabulary: related words and phrases.
synonyms: uncertain not certain to occur; not inevitable adjective very uncertain βleft everything up in the air β synonyms: uncertain not established beyond doubt; still undecided or unknown Cite this entry Style: MLA "Up in the air." Vocabulary.com Dictionary, Vocabulary.com, https://www.vocabulary.com/dictionary/up in the air.
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up in the air synonym