The word "unfixable" typically refers to something that cannot be repaired or solved. However, there are several synonyms for this term that can be used to convey a similar meaning. For instance, "irreparable" and "irretrievable" both suggest that something is beyond repair or recovery. "Unsolvable," "insoluble," and "intractable" imply that a problem cannot be solved or resolved. "Hopeless," "irremediable," and "incorrigible" all convey a sense of finality and suggest that a situation cannot be improved or changed. Although each of these words has slightly different connotations, they can all be used to describe something that is unfixable.