When it comes to describing something that is powered by a motor, there are a couple of synonyms that can be used. The term "mechanized" is often used to describe something that is powered by a mechanical device. "Engine-driven" is another synonym that can be used to describe a motor-powered device, particularly when referring to devices that are powered by an internal combustion engine. Other synonyms for "motor-powered" include "motorized," "automated," and "powered by a motor." Ultimately, the choice of synonym will depend on the context in which it is being used, and the specific connotations that are desired to be conveyed.