It can be forced or fatal (5)

I believe the answer is:

error

(Other definitions for error that I've seen before include "Blunder, slip" , "A mistake or inaccuracy" , "Mistake or fault" , "Mistake, lapse" , "Faulty judgement" .)

I've seen this clue in the Universal.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.