If wrong, he's fined (3)

I believe the answer is:

ned

I'm a little stuck... Click here to teach me more about this clue!

'if wrong he's' is the definition.
The definition suggests a singular noun which matches the answer.

'fined' is the wordplay.
'NED' is hidden within the letters.
However, I am not sure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for ned that I've seen before include "A den for Edward" , "rough" .)

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.