Fashion classification becoming less extreme (10)

I believe the answer is:

moderating

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

'less extreme' is the definition.
Both the answer and definition are adjectives. Maybe there's an association between them I don't understand?

'fashion classification' is the wordplay.
'fashion' becomes 'mode' (synonyms).
'classification' becomes 'rating' (rating is a kind of classification).
'mode'+'rating'='MODERATING'

'becoming' is the link.

Can you help me to learn more?

(Another definition for moderating that I've seen is " checking on marking standards".)

I've seen this clue in The Sunday Times.

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.