Rehabilitation is the process of returning someone or something to a state of normalcy or functionality. However, in certain contexts, the opposite of rehabilitation may be required. Some antonyms of the word rehabiliatated are deteriorated, worsened, deconditioned, and declined. An individual who has not benefited from rehabilitation may be deconditioned or weakened. A physical object or property that has been neglected or not maintained can deteriorate or worsen. In some cases, rehabilitation may not be effective, and there may be a need to consider alternative approaches to improvement. It is essential to understand the context of usage when considering synonyms or antonyms of a particular word.