Related Clues:

• Bother big-time
• Slowpoke at the track
• Over-the-hill horse
• Not just nudge
• Be a pest
• Not much of a racehorse
• Badger, in a way
• Horse unlikely to win a race
• Remind annoyingly
• Be a shrew
• Annoy by persistent faultfinding
• Keep worrying
• Harpy
• Pester continuously
• Sick bay?