Stimulate ability to understand things we hear (6)

I believe the answer is:

incite

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'stimulate' is the definition.
(I know that incite is a more specific form of stimulate)

I can't explain the remainder of the clue.

Can you help me to learn more?

(Other definitions for incite that I've seen before include "Arouse to action" , "Whip up" , "Provoke to action" , "Foment, urge on" , "Encourage or stir up" .)

I've seen this clue in The Times.

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