Sleuths turn out most attractive (7)

I believe the answer is:

lushest

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'most attractive' is the definition.
Both the answer and definition are superlative adjectives. Maybe they are linked in a way I don't understand?

'sleuths turn' is the wordplay.
'turn' is an anagram indicator.
'sleuths' with letters rearranged gives 'LUSHEST'.

'out' acts as a link.

Can you help me to learn more?

(Other definitions for lushest that I've seen before include "Most profuse or succulent" , "Most fleshy" , "Most luxuriant" , "Most juicy" , "Most luxurious in growth" .)

I've seen this clue in The Guardian.

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