Related Clues:

• Yo-yo
• What results may do
• Make different
• Results may do this
• What your mileage may do
• ''Your mileage may ___''
• Widen
• Break the monotony
• Differ
• Be inconsistent
• Modulate
• Expand, as one's horizons
• Make wider
• Change from time to time
• Expand, as a business