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adj. Something which is tentative, iffy, uncertain, unresolved, or otherwise not definitive. An unsettled matter.
After George had that cold, the trip to the opera was completely up in the air.
by united spammers January 11, 2011
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A Airplane pilot. Quote from TV show "The Munsters", where Grandpa Munster while snooping through his new tennent's belongings, finds a badge and asks Herman Munster what kind of a job would require wearing a badge.
Could he be a pilot? No, He's not the "up in the air" type.
by Maleable April 18, 2005
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