He, shaken, maybe has to lose! (3)

I believe the answer is:

ken

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

'he' is the definition.

'shaken maybe has to lose' is the wordplay.
'KEN' is hidden within the letters.
But, I'm unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for ken that I've seen before include "Identify; -- Livingstone" , "Notice" , "Know; man's name" , "Awareness" , "Understanding - boy's name" .)

I've seen this clue in the Evening Standard.

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