Unfriendly; brisk (6)

I believe the answer is:

frosty

(Other definitions for frosty that I've seen before include "Cold and unfriendly (glance or reception?)" , "Chilly in attitude, like musical snowman" , "Lacking in warmth" , "showing little enthusiasm" , "Icy cold" .)

I've seen this clue in the Sydney Morning Herald.

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.