Some fare well, uncharacteristically, after downsizing (5)

I believe the answer is:

lunch

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'downsizing' is the definition.
Although both the answer and definition are singular nouns, I can't see how they can define each other.

'some fare well uncharacteristically' is the wordplay.
'some' says the answer is hidden in the clue (some of the parts of the word are used).
'LUNCH' can be found hidden inside 'fare well uncharacteristically'.

'after' is the link.

Can you help me to learn more?

(Another definition for lunch that I've seen is " Midday meal".)

I've seen this clue in The Times.

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