1. the process of keeping something in good condition; maintenance
2. the cost of maintaining something in good condition

Examples

• The upkeep of the old mansion requires constant attention.
• Regular upkeep will extend the life of your car.
• The upkeep on this house is very expensive.
• They hired a service to handle the upkeep of their lawn.
• The museum struggles with the upkeep of its historic building.
• Proper upkeep prevents costly repairs later.
• The upkeep includes painting, cleaning, and minor repairs.