Crossword Genius

Fraternise during swimming lessons (6)

Ross

I believe the answer is:

mingle

'fraternise' is the definition.
(thesaurus)

'during swimming lessons' is the wordplay.
'during' indicates a hidden word.
'MINGLE' is hidden within 'swimming lessons'.

(Other definitions for mingle that I've seen before include "Mix - associate" , "Circulate at a party" , "Mix together" , "Mix among others" , "Dawn song, poem" .)

I've seen this clue in The Guardian.
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