Crossword Genius

Put an end to Spooner’s freedom (7)

Ross

I believe the answer is:

silence

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'put an end to' is the definition.
The answer and definition can be both related to change as well as being verbs in their base form.
Perhaps there's a link between them I don't understand?

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for silence that I've seen before include "may be required in court" , "It is golden acccording to the 1960s song" , "Gag" , "License (anag)" , "Lack of sound" .)

I've seen this clue in The Times.
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