/ ˈfrɒsti; NAmE ˈfrɔːsti/ adjective
1.
( of the weather ) extremely cold; cold with frost :
a frosty morning
He breathed in the frosty air.
2.
covered with frost :
frosty fields
3.
unfriendly, in a way that suggests that sb does not approve of sth :
a frosty look / reply
The latest proposals were given a frosty reception.
► frost·ily / -ɪli; NAmE / adverb :
'No, thank you,' she said frostily.