a person who behaves in a sneaky manner to try and create favourable circumstances for themselves, or to cover their tracks, quite often at the expense of others. They use weasel-words to try and make a story sound in their favour whilst never directly lying, usually by leaving out key details such as who actually did a piece of work.

A fuckweasel will always avoid telling a direct lie in case they are exposed, giving them plausible deniability or letting them fall back onto "a misunderstanding" excuse, such as;

Boss> "I spoke to Steven and he said he'd written that report you said you'd done"
Weasel> "Ah no, sorry you must have misunderstood, I just came over earlier to tell you it was completed."

The "boss" in this case has no comeback as the fuckweasel is technically correct, although it is clear what the inference was in the original conversation.

A good fuckweasel will pick his or her stories cleverly to lower the chance that a discovery will occur.
My manager asked me to stay back last night and finish some content. When I came in this morning I found out that he had sent an email out early to the department saying it was finished and I spotted someone in the coffee point thanking him. I wasn't even mentioned. What a fuckweasel!
by the_manager July 11, 2013
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A more creative way of insulting someone. Basically, motherfucker but better.
"June is such a fuckweasel."
by edenexxe December 28, 2022
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Somebody who is such a gimp that they could only fuck weasels. And only then if the weasel agreed.
Dan is such a fuckweasel!
by sparky January 27, 2004
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“So Jeremy Corbyn appeared on the Andrew Neil show and took a battering, but it’s OK because the rest of the candidates are going to as well.”

“Dude, BoJo has pulled out..”

“ The fuckweasel.”
by Stalks November 27, 2019
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