Related Clues:

• Become less bright
• Grow pale
• Go back, as for a pass
• Become indistinct
• Lose support, as at campaign's end
• Lose strength in the backstretch
• Die away
• Lose energy
• Diminish slowly
• Blow over
• Get lighter, in a way
• Grow dull
• Drop back to pass
• Not do well in the stretch
• Get sleepy