1. able to be used; functional and practical
2. adequate for its purpose though not outstanding

Examples

• The old car is still serviceable despite its age.
• She wore a serviceable pair of boots for the hiking trip.
• The laptop is serviceable but not particularly fast.
• His serviceable performance earned him a passing grade.
• The furniture was serviceable rather than stylish.
• We need serviceable equipment that won’t break down easily.