Crossword Genius

Runs off to secure ten contracts (6)

Ross

I believe the answer is:

flexes

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'contracts' is the definition.

'runs off to secure ten' is the wordplay.
'runs off' becomes 'flees' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'to secure' indicates putting letters inside.
'ten' becomes 'x' ('X' can be a synonym of 'ten').
'flees' going around 'x' is 'FLEXES'.

Can you help me to learn more?

(Other definitions for flexes that I've seen before include "Bends joint or muscles" , "Moves or bends muscles" .)

I've seen this clue in The Telegraph.
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