Definition of "Maintain" :

verb: stick to correctly or closely

verb: support against an opponent

verb: state categorically

verb: state or assert

"He maintained his innocence."

verb: maintain by writing regular records

"Maintain a record."

verb: supply with necessities and support

verb: maintain for use and service

verb: have and exercise

verb: keep in safety and protect from harm, decay, loss, or destruction

verb: cause to continue in a certain state, position, or activity; e.g., keep clean'