To correct a situation, or yourself if necessary.
"You had best unfuck yourself before I unscrew your head and shit down your neck!"
by Anonymous September 28, 2003
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This is less a definition and more an example of the historical use of the word "unfuck" from my personal experience. True story. The example should be self explanatory but some background is in order. I was probably one of the youngest sergeants in the USMC with almost two years in grade on the 4th of July 1970. I was about halfway through my second tour in Vietnam. We just returned from an 8-day patrol and had some time off. About ten of us headed down to the beach where we celebrated the 4th by drinking, smoking, shooting off some 300 or so pop flares, a few thousand rounds of M-60 tracer rounds, I made some firecrackers from C4 and det chord. Still had one of those left when I noticed our fire out and wood supply depleted. Being the resourceful ranking Marine I used my leadership skills to point out the adjacent USO and its ample wood supply. There must have been forty to fifty picnic tables. Huge ones that were made out of some damn fine lumber and they made a damn fine bonfire. We did them all over the next few hours, four to five added as needed to spark things up. I felt like a real patriot.
Hungover, and as ranking member of the pinic table assualt team, I was called on the carpet next morning where my CO and First Shirt were giving me some 'feedback' on my leadership skills. When I laughed at them accusing me of signalling the enemy, for some reason they got really mad. First Shirt bumps up next to me and with his lips next to my ear he yells, "You best unfuck your attitude. You can fly with the nightowl if you want but you best be ready to scream with the Eagle in the morning."

True story and just one of many contexts in which the versatile "unfuck" adds value to your formal command of the English language.
by WinningAttitude March 17, 2007
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1. To hastily rectify an error of incalculable proportion due diametrically to another's absolute lack of aptitude, effort, competence, aspiration and/or heed, customarily within an unsurprisingly unfeasible period of time.
"So my boss' admin decided to take some initiative and login to the model that I prepared for the meeting. Long story short, she completely fucked the whole thing up. Then my boss logs in to the model and alerts me that the model is miscalculating the projections and is unacceptable. With just a half an hour before the presentation, I had to go in an unfuck the entire situation."
by murphy923 December 7, 2012
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To remove or correct any stupidly fucked up mistakes.
Hey bruh! Can you please unfuck this file?
by devera August 22, 2011
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A threat to use on a sexual partner when you're pissed at them. It will strike fear in their hearts, as you are attempting to take back all of the fucking you have done with them.
Boy: "Holy shit! NO!!!"
by fuckfuckityfuckfuck July 11, 2010
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To express the desire to have not had sexual intercourse with some one.
by May 29, 2003
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to repair sth., to fix sth., to remedy sth.
Fuxxy: Who has put his fuckin' fencing bag in my wicked trunk? I can't open it, it is jammed as hell!

Unfuck(k)ing: May I unfuck that particular trunk of yours?
by B. J. Copper Foley September 27, 2009
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