The word "undamped" refers to something that is not subdued or restrained in any way. Antonyms for the term "undamped" include "damped", "subdued", "restrained", "stifled", "controlled", "muted", "softened", "depressed" and "diminished". These words describe something that has been put under control or has had its intensity reduced. The use of these antonyms is particularly important in certain fields such as engineering, physics and music where damping is crucial in the performance and stability of a system or instrument. The opposite of undamped refers to something that is under check, control or otherwise suppressed.