The word "unremediable" refers to a situation or problem that cannot be fixed, resolved, or improved. Synonyms for unremediable include irreparable, unsolvable, unfixable, hopeless, intractable, incurable, irreversible, and uncorrectable. All these words convey a sense of finality and indicate that there is no possible solution or remedy for a situation. It's important to note that the use of these words should be judicious, and that there are often ways to improve or mitigate even seemingly unremediable situations. Nonetheless, when things truly cannot be fixed, these words aptly describe the often-frustrating reality that we must accept.