Crossword Genius

Toxic intellect admits toxic sides failed (7)

Ross

I believe the answer is:

noxious

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'toxic' is the definition.
(associated in meaning)

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(Other definitions for noxious that I've seen before include "Harmful, toxic" , "Disgusting" , "Harmful, poisonous" , "foul" , "Unwholesome" .)

I've seen this clue in the Sydney Morning Herald.
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