When something is more than unbelievable.
Wow, that sex was un-be-fucking-lievable.
by Anna Kezarer-branch October 27, 2007
Top Definition
Like unbelievable, but with a swear to kick it up a notch for people who just can't believe what just happened.
"Unbefuckinglievable," Jan said, after getting another term paper that week.
by Ashleybobashley xD January 20, 2009
unbelievable, not believable or incomprehensible, beyond the pale, fantasy wrong, unjust, though it can be also used as an expression of positivity....
The service at that supermarket is unbefuckinglievable!
Those drugs are unbefuckinglievable....
by lovethebuzz December 27, 2013

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