Crossword Genius

No-frills, perhaps? That's cool (9)

Ross

I believe the answer is:

unruffled

I'm a little stuck... Click here to teach me more about this clue!

'cool' is the definition.
(thesaurus)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for unruffled that I've seen before include "Tranquil, unperturbed" , "Not perturbed" , "without frills" , "Calm" , "Not disturbed, remaining even-tempered" .)

I've seen this clue in The Daily Express.
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.