8 Wintry Words to Defrost Your Vocabulary
1560s, "causing a sensation of cold," from chill (n.) + -y (2). Meaning "feeling coldish" is attested from 1610s; figurative use is recorded by 1841. Related: Chilliness.
Wonderful; excellent; cool, neat: You're chilly. You're okay, Sarge (1980s+ Teenagers)