I regret not a silly question (11)

I believe the answer is:

interrogate

'question' is the definition.
('interrogate' can be a synonym of 'question')

'i regret not a silly' is the wordplay.
'silly' indicates an anagram.
'regret'+'not'+'a'='regretnota'
'regretnota' anagrammed gives 'nterrogate'.
'i'+'nterrogate'='INTERROGATE'

(Other definitions for interrogate that I've seen before include "Formally question" , "Question closely" , "Cross-examine" , "Ask questions of (someone)" .)

I've seen this clue in The Times.

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