Helps domestic staff without money (4)

I believe the answer is:

aids

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'helps' is the definition.
('aid' can be a synonym of 'help')

I can't explain the rest of the clue.

(Other definitions for aids that I've seen before include "Said to be a modern plague" , "Assists" , "Said to be a dread modern disease" , "Helps with a dread disease" , "Said to be an international disease" .)

I've seen this clue in The Guardian.

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