Crossword Genius

Realise negative answer, say (4)

Ross

I believe the answer is:

know

'realise' is the definition.
(I know that realise is a more specific form of know)

'negative answer say' is the wordplay.
'negative answer' becomes 'no'.
'say' shows a homophone (sound like).
'no' is a homophone of 'KNOW'.

(Other definitions for know that I've seen before include "Have information" , "Have awareness of" , "Articulated" , "Be aware of (something)" , "Realise" .)

I've seen this clue in The Mirror.
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