Craftsman finally becoming less active (7)

I believe the answer is:

glazier

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'craftsman' is the definition.
(I know that glazier is a type of craftsman)

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Other definitions for glazier that I've seen before include "Light fitter" , "One may fix lights" , "Tradesman" , "Window mender" , "Windowpane fitter" .)

I've seen this clue in The Times.

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