Crossword Genius

Roughly slay idol that's unfaithful (8)

Ross

I believe the answer is:

disloyal

'unfaithful' is the definition.
(synonyms)

'roughly slay idol' is the wordplay.
'roughly' is an anagram indicator.
'slay'+'idol'='slayidol'
'slayidol' anagrammed gives 'DISLOYAL'.

'that's' is the link.

(Other definitions for disloyal that I've seen before include "The opposite of 11 Across" , "Unfaithful or unpatriotic" , "Not faithful, unpatriotic" , "Violating trust" , "Faithless" .)

I've seen this clue in The Independent.
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