"Unmitigated" refers to something that is complete or absolute, without any improvement or reduction. Antonyms of "unmitigated" refer to something that is modified, moderated or improved. For instance, the word "mitigated" refers to reducing the severity, intensity, or seriousness of something. On the other hand, "tame," "subdued," "tempered," "moderated," and "restrained" are other antonyms of "unmitigated" that suggest a lesser degree or intensity of something. Similarly, "controlled," "limited," "restricted," and "contained" refer to an element of moderation or restraint that can help improve the situation. By using antonyms of "unmitigated", speakers or writers can clearly communicate a degree of modification, restraint or lessening of something.