Related Clues:

• Chilled
• Forbidding
• Zeno, notably
• One who grins and bears it
• Like Zeno
• Stiff-upper-lip type
• Like a very rare day in hell
• Zeno was one
• Like the Arctic
• Long-suffering
• Stone-faced
• Bitterly cold
• Chilly
• Freezing
• Hard to move