Is there a term, more colloquial than professional, that expresses the severity of a bug. "This computer bug is so bad, nobody can use the software as intended". In a sentence is would be "This bug is a ____" or this bug is ____ (adj)."
I've heard reference to terms like "critical" and "serious" used professionally in bug tracking software, but that doesn't seem to express well enough just how bad the problem is, seem overused. I need to be able to communicate to management just how terrible, and if a thousand bugs are labeled as "critical" but aren't actually stopping people from doing their work, this needs to be seen as 10x worse.
There must be some kind of term, like "work-stopping" "show-stopper", but I can't quite recall the term.