Upkeep/ˈʌpkiːp/ Definition 1 of 2Pro Tip 1/3Financial Aspect Emphasizes the cost required to maintain something over time. Buying a car is one thing, but the upkeep can be costly. Pro Tip 2/3Not Upgrade Reflects maintenance expenses, not improvements or enhancements. The building's upkeep doesn't include renovating the lobby. Pro Tip 3/3Regular Necessity Needs to happen regularly, not a one-time task. The machinery's upkeep is a monthly routine.