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Learn the meaning, origin, and usage of the idiom "Up in the air" with five example sentences across different contexts. This idiom is part of ourEveryday Casual & Workplace collection for PTE and IELTS preparation.

The idiom stems from the literal concept of tossing objects into the air, during which their final landing place or outcome remains entirely unpredictable until they ground. It gained widespread popularity in the mid-20th century, drawing a strong mental parallel to a coin toss or juggling where nothing is settled while the items remain suspended. Over time, it transitioned from describing physical objects in motion to abstract plans and schedules that lack a firm foundation.
Regarding our expansion timeline, the launch date is still up in the air because we are waiting on the final budget approval from the board.
I want to go on vacation next month, but my travel plans are up in the air until I find out if my leave request gets approved.
While the immediate ecological impacts of the policy are clear, its long-term economic consequences remain largely up in the air.
With two key players facing sudden injuries just days before the finals, the championship outcome is completely up in the air.
Until the treaty is officially signed by both nations, the future of international trade regulations in this region hangs up in the air.
A. The price of groceries has been up in the air all year, forcing families to spend significantly more money each week.
B. Because the main investor pulled out at the last minute, our funding is up in the air and the project might be canceled.
C. She was so angry during the argument that she stood up in the air and started shouting at her colleagues.
D. If you want to clear your mind and relax, you should go up in the air for a long walk in the nature reserve.