Maintenance is strictly connected to the utilization stage of the product or technical system, in which the concept of maintainability must be included. The meaning of MAINTAIN is to keep in an existing state (as of repair, efficiency, or validity) : preserve from failure or decline. How to use maintain in a sentence.

Understanding the Context

Both ' keep ' and ' maintain ' mean to make something stay in a particular state or condition. However, they are grammatically different. This lesson will explore the similarities of these two verbs as well as their differences in terms of the structure of sentences that use each of them.