Proverbially loud speakers! (7)

I believe the answer is:

actions

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'proverbially loud speakers' is the definition.
The answer and definition can be both man-made objects as well as being plural nouns.
Perhaps they are linked in a way I don't understand?

This is all the clue.

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(Other definitions for actions that I've seen before include "Gestures" , "what one's done" , "They're done" , "They speak louder than words" , "Deeds" .)

I've seen this clue in the Evening Standard.

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