Related Clues:

• Erosion
• Smog, e.g.
• Stand the test of time
• Haul with effort
• Grow wearisome
• Yawner
• Short race
• Verb with down or out
• Become threadbare
• Gloom
• Deteriorate through use
• Resistance of a sort
• Cloy
• 10-Across atmosphere
• Wearisome task