Are hosts cultured or extremely rough? (8)

I believe the answer is:

hoarsest

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'cultured or extremely rough?' is the definition.
I can't tell whether this definition defines the answer.

'are hosts' is the wordplay.
'are hosts' can be anagrammed to 'HOARSEST'.
Though, I am unsure how the anagram is indicated.

Can you help me to learn more?

(Another definition for hoarsest that I've seen is " most husky voice".)

I've seen this clue in The Independent.

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