Strangely in matter of discipline he's strict (8)

I believe the answer is:

martinet

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

'discipline he's strict' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.

'strangely in matter' is the wordplay.
'strangely' is an anagram indicator.
'in'+'matter'='inmatter'
'inmatter' anagrammed gives 'MARTINET'.

'of' is the link.

Can you help me to learn more?

(Other definitions for martinet that I've seen before include "Gradgrind was one" , "One demands exact conformity to rules" , "Stickler for discipline" , "Person who demands strict obedience" , "Tyrant, one who demands strict obedience" .)

I've seen this clue in The Globe and Mail.

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.