Un diminished means not reduced or lowered. Its antonyms are increased, enhanced, boosted and magnified. These words indicate growth, advancement and improvement. Something that is un diminished remains the same, while something that is increased or enhanced gets better or greater. To increase is to make something larger or more significant, while to enhance is to intensify or improve the quality of something. Boosted and magnified, on the other hand, indicate a significant increase in size, power, or strength. These antonyms of un diminished are useful in describing processes of development, growth, and progress.