Crossword Genius

Conflicts when he is in form (7)

Ross

I believe the answer is:

clashes

'conflicts' is the definition.
(I know this)

'he is in form' is the wordplay.
'is in' is an insertion indicator.
'form' becomes 'class' (synonyms).
'he' put into 'class' is 'CLASHES'.

'when' is the link.

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