Undersupply from the best intentions (5)

I believe the answer is:

stint

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'undersupply' is the definition.
Both the answer and definition are singular nouns.
Perhaps there's a link between them I don't understand?

'from the best intentions' is the wordplay.
'from' indicates the answer is hidden within the clue.
'STINT' can be found hidden inside 'best intentions'.

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(Other definitions for stint that I've seen before include "Limitation of effort" , "one's allotted task" , "Spot of work" , "Be sparing; sandpiper" , "Be niggardly with tints" .)

I've seen this clue in the Evening Standard.

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