Push over incompletely? (5)

I believe the answer is:

shove

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'push' is the definition.
(I know that shove is a more specific form of the action push)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for shove that I've seen before include "Push in a rude manner" , "Push roughly" , "Jostle" , "Push rudely" , "Push (or what it comes to!)" .)

I've seen this clue in the Evening Standard.

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