Finding synonyms for the term 'servomechanism' may be harder than you might think. In essence, servomechanisms are machines used to regulate and control other machines or mechanical processes. Despite its technical nature, the term's origin dates back to the 1920s, and there haven't been many other terms to describe the phenomenon. However, some synonyms you can use are 'feedback control system', 'closed-loop control systems', and 'automatic control system'. Other technical synonyms for servomechanism could also include 'actuation mechanism', 'position control system', and 'control loop'. While each term may have its subtle nuances, they all refer to an electronic or mechanical device that controls motion, speed, or other action in a precise, predetermined way.