The adjective "unhealable" refers to something that cannot be cured or remedied. There are several synonyms for this word, depending on the context and the type of affliction being described. Some common alternatives include incurable, irreparable, inoperable, untreatable, permanent, deep-seated, chronic, and lasting. These words convey a sense of finality or inevitability, indicating that the condition or damage is irreversible. In some cases, words like irreversible or irreparable are used to suggest that the damage is physical and cannot be repaired, while words like incurable or untreatable are used for conditions that are medical or psychological in nature. Regardless of the specific context, all of these synonyms suggest that the prospect of recovery or restoration is unlikely or impossible.