1. to keep something in good condition by taking care of it
2. to continue to have or keep something at the same level
3. to state or assert that something is true

Examples

• She maintains her car by getting regular oil changes.
• The company maintains high standards of quality.
• He maintains his innocence despite the evidence.
• The bridge requires constant work to maintain its safety.
• She maintains a healthy diet and exercise routine.
• The father maintains his family with two jobs.
• The museum maintains an extensive collection of artifacts.