1. past tense and past participle of maintain; kept in good condition through regular care
2. past tense and past participle of maintain; continued to assert or declare as true
3. past tense and past participle of maintain; provided financial support for

Examples

• The garden was well maintained throughout the summer.
• She maintained her innocence despite the evidence.
• The old building has been carefully maintained for decades.
• He maintained that the decision was unfair.
• The scholarship maintained her through college.
• The equipment was properly maintained by the staff.
• They maintained their friendship over many years.