Crossword Genius

Promises to take away support from governing bodies (7)

Ross

I believe the answer is:

commits

I'm a little stuck... Click here to teach me more about this clue!

'promises' is the definition.
The definition and answer can be both to do with communicating as well as being verbs in their -s form.
Perhaps you can see an association between them that I can't see?

I cannot understand how the remainder of the clue works.

Can you help me to learn more?

(Another definition for commits that I've seen is " Carries out (a crime)".)

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