icy
Definitions
Covered with or consisting of ice.
Extremely cold; freezing.
Lacking warmth or affection; unfriendly or hostile.
Examples
The sidewalk was so icy that I had to walk very carefully to avoid falling.
She gave him an icy stare that made him feel instantly unwelcome.
The mountain peak was covered in an icy layer of frost that shimmered in the morning sun.