1. devoid of warmth and cordiality; expressive of unfriendliness or disdain

- icy stare

Similar word(s): cold, frigid, frosty, frozen, glacial, wintry

2. extremely cold

- icy hands

Similar word(s): cold, arctic, frigid, gelid, glacial, polar

3. covered with or containing or consisting of ice

- icy northern waters

Similar word(s): frozen

4. shiny and slick as with a thin coating of ice

- roads and trees glazed with an icy film

Similar word(s): glazed, shiny