More calm visionary grabbing short French boy (7)

I believe the answer is:

serener

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

'more calm' is the definition.
Both the definition and answer are comparative adjectives. Perhaps there's a link between them I don't understand?

'visionary grabbing short french boy' is the wordplay.
'visionary' becomes 'seer' (synonyms).
'grabbing' means one lot of letters goes inside another.
'short french boy' becomes 'ren' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'seer' placed around 'ren' is 'SERENER'.

Can you help me to learn more?

(Another definition for serener that I've seen is " Comparatively calm".)

I've seen this clue in The Hindu.

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.