- needing frequent maintenance or repair: My bike is high-maintenance; this is its third front wheel this month.
- Informal. demanding a great deal of attention, money, or effort: His high-maintenance girlfriend refuses to get engaged without a ring and diamond earrings to match.
- (of a piece of equipment, motor vehicle, etc) requiring regular maintenance to keep it in working order
- informal (of a person) requiring a high level of care and attention; demanding