Showing strength by holding back a payment (5)

I believe the answer is:

beefy

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'showing strength by holding back a payment' is the definition.
I can't tell whether this defines the answer.

'by holding back a payment' is the wordplay.
'holding' is an insertion indicator.
'back' is a reversal indicator.
'a payment' becomes 'fee' (I've seen this before).
'fee' backwards is 'eef'.
'by' placed around 'eef' is 'BEEFY'.

Can you help me to learn more?

(Other definitions for beefy that I've seen before include "Athletic and muscular (non-vegetarian?)" , "Colloquially muscular" , "Brawny" , "Solid" , "like some bully?" .)

I've seen this clue in the Evening Standard.

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