Crossword Genius

Contaminate fin, etc, when swimming (6)

Ross

I believe the answer is:

infect

'contaminate' is the definition.
(infecting is a kind of contaminating)

'fin etc when swimming' is the wordplay.
'when swimming' indicates an anagram.
'fin'+'etc'='finetc'
'finetc' with letters rearranged gives 'INFECT'.

(Other definitions for infect that I've seen before include "Contaminate with disease" , "Give (someone) a disease" , "Affect (with a virus)" , "Transmit disease to another" , "Contaminate, make ill" .)

I've seen this clue in The Times.
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