Definition of "maintain" in English

verb

1. To keep up; to preserve; to uphold (a state, condition etc.).

   • maintain contact
   • maintain order
   • maintain a relationship
   • It’s important to maintain good posture while sitting.
   • She struggled to maintain her composure under pressure.

2. To declare or affirm (a clause) to be true; to assert.

3. To keep in good condition and working order.

4. (obsolete, transitive) To support (someone), to back up or assist (someone) in an action.