Crossword Genius

Horrible rogues turning on me (8)

Ross

I believe the answer is:

gruesome

'horrible' is the definition.
(I've seen this in another clue)

'rogues turning on me' is the wordplay.
'turning' indicates an anagram.
'on' is a charade indicator (letters next to each other) (in a down clue, letters appear on others).
'rogues' with letters rearranged gives 'grueso'.
'grueso'+'me'='GRUESOME'

(Other definitions for gruesome that I've seen before include "'Grisly, macabre (8)'" , "terrible" , "Revolting, filling one with horror and disgust" , "'Ghastly, grisly (8)'" , "Repulsive, horrid" .)

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