Immitigable is the word used to describe situations or conditions that cannot be made less severe or intense. Some synonyms for immitigable include inescapable, relentless, intolerable, insurmountable, adamant, firm, unyielding, unchangeable, and unrelenting. Other synonyms that can be used to convey the same meaning as immitigable are inexorable, implacable, intransigent, unappeasable, unforgiving, obdurate, and uncompromising. These words are often used to describe circumstances that are beyond someone's control and cannot be altered by any means. Whether it's a natural disaster, a stubborn person, or something inherently fixed, these words are useful when discussing unyielding situations that require a different course of action.