icy

adjective, i·ci·er, i·ci·est.

1. made of, full of, or covered with ice: icy roads.
2. resembling ice.
3. cold: icy winds.
4. without warmth of feeling; coldly unfriendly; frigid: an icy stare.

adjective icier or iciest

1. made of, covered with, or containing ice
2. resembling ice
3. freezing or very cold
4. cold or reserved in manner; aloof

adj.

Old English isig; see ice (n.) + -y (2). Modern use is said to be a late Middle English re-formation. Figurative use from 1590s. Related: Icily; iciness.