Lady Guinevere's indignant refusal (5)

I believe the answer is:

never

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'lady guinevere's indignant refusal' is the definition.
I can't tell whether this defines the answer.

'lady guinevere's indignant refusal' is the wordplay.
'NEVER' is hidden in amongst the letters.
But, I'm unsure how the hidden word is indicated.

Can you help me to learn more?

(Other definitions for never that I've seen before include "On no occasion" , "Do not give up!" , "when pigs fly" , "Not in a million years!" , "Strong negative" .)

I've seen this clue in the Evening Standard.

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