Solvent such as turpentine (7)

I believe the answer is:

thinner

(Other definitions for thinner that I've seen before include "what one adds to paint" , "Slimmer" , "Diluting solvent" , "More runny" , "Solvent; less thick" .)

I've seen this clue in The Times.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.