The term 'to acceptable degree' typically has a positive connotation, implying that something has met a certain level of satisfaction or approval. However, its antonyms carry a negative connotation, suggesting that something has not met the expected level of quality or achievement. Some antonyms of 'to acceptable degree' include inadequate, unsatisfactory, deficient, flawed, inferior, substandard, unacceptable, and unsuitable. These words are used to describe situations, objects, or actions that do not meet the desired standard or quality. For example, an unsatisfactory job performance may result in negative feedback, while a substandard product may lead to customer complaints or recalls.