Related Clues:
- Entry on a to-do list
- Work doggedly
- Nuisance of a task
- Walk through the mud
- Tiring walk
- Extra effort
- March in mud
- After-school responsibility, perhaps
- After-school responsibility
- Trudge, as through mud
- Tiring journey
- Plod heavily
- Exhausting effort
- Sapphire novel on which 'Precious' was based
- Unfun assignment