Villainous ogre madly going round the bend (5)

I believe the answer is:

rogue

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'villainous ogre madly going round the bend' is the definition.
I can't tell whether this defines the answer.

'ogre madly going round the bend' is the wordplay.
'madly' indicates anagramming the letters.
'going round' is an insertion indicator (some letters go around others).
'the bend' becomes 'U' (a U-bend is a kind of bend - pipe under sink).
'ogre' anagrammed gives 'roge'.
'roge' placed around 'u' is 'ROGUE'.

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(Other definitions for rogue that I've seen before include "Diseased plant" , "Bad guy" , "Stray" , "Charlatan" , "Baddie" .)

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