Crossword Genius

Defeat for a bet? (4)

Ross

I believe the answer is:

beat

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

'defeat' is the definition.
(synonyms)

'a bet?' is the wordplay.
'a bet' anagrams to 'BEAT'.
However, I am unsure how this is indicated.

'for' is the link.

Can you help me to learn more?

(Other definitions for beat that I've seen before include "Tan" , "Surpass (a score)" , "Baffle - all in" , "tired" , "course for law enforcement officers" .)

I've seen this clue in the Evening Standard.
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