Related Clues:

• Become tedious
• Time's sign
• Fading, fraying, etc.
• Tread loss, e.g.
• Tire baldness, e.g.
• Don, as clothing
• Gradual deterioration
• Tucker (out)
• "I haven't a thing to ___!"
• Gradually disappear, with "off"
• Age, as tires
• Damage from use
• Lose effectiveness, as painkillers, with "off"
• Sign of use
• Fade, maybe