Related Clues:

• Unloved work
• Walk like a lummox
• Walk with heavy steps
• Break one's back, so to speak
• Work monotonously
• One of Churchill's four offerings
• Chug along
• Trudge (along)
• Exhausting effort
• Move like a turtle
• Trudge laboriously
• Labor strenuously
• Opposite of race
• It might make you a sweater?
• Proceed slowly but surely