Related Clues:

• Has legs
• Widens
• Has legs, so to speak
• Keeps ticking
• Doesn't break down
• Cobblers' forms
• Doesn't wear
• Doesn't give out
• Doesn't die out
• Pushes back, as a deadline
• Stays the course
• Renews, say
• Maintains a course against opposition
• Continues firmly or obstinately
• Continues on a course in spite of opposition