Wife gets poorly beforehand and afterwards, leading to animosity (3,4)

I believe the answer is:

ill will

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'animosity' is the definition.
(I've seen this before)

I can't explain the rest of the clue.

(Other definitions for ill will that I've seen before include "Bitterness" , "Bad feeling towards, hostility" , "Positively unfriendly disposition" , "Hostility, malevolence" , "causing resentment" .)

I've seen this clue in The Guardian.

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