frost ‧ y /ˈfrɒsti $ ˈfrɒːsti/ BrE AmE adjective
1 .
a) extremely cold:
a beautiful frosty morning
frosty air
b) covered with ↑ frost :
the frosty ground
2 . unfriendly SYN icy
frosty stare/look/tone
He gave me a frosty stare.
the frosty silence that followed her announcement
My words got a frosty reception.
—frostily adverb