Moralising knocked insomniacs out (13)

I believe the answer is:

sanctimonious

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'moralising knocked insomniacs out' is the definition.
I can't tell whether this defines the answer.

'knocked insomniacs out' is the wordplay.
'knocked' indicates anagramming the letters.
'insomniacs'+'out'='insomniacsout'
'insomniacsout' anagrammed gives 'SANCTIMONIOUS'.

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(Other definitions for sanctimonious that I've seen before include "Canting" , "Affecting piety" , "Making show of being morally superior" , "with a holier-than-thou attitude" , "Self-righteous" .)

I've seen this clue in The Telegraph.

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