Crossword Genius

Given a turn newly on a rota in committee, at first like Pre-Raphaelite painting (12)

Ross

I believe the answer is:

naturalistic

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(Other definitions for naturalistic that I've seen before include "Imitating real life" , "Representative" , "Based on real life" , "very true-to-life" .)

I've seen this clue in The Times.
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