The antonyms for the word "most hunchbacked" can vary depending on the context in which it is being used. Generally speaking, antonyms for hunchbacked might include terms like "upright," "tall," "straight," or "even-shouldered." Other possible antonyms could be descriptors like "graceful," "athletic," or "flexible." When used in the context of characterizing a person's demeanor, the antonyms for "most hunchbacked" might include terms like "confident," "bright," or "happy." Regardless of the specific antonyms being used, the idea is to provide words that emphasize the opposite characteristics of hunchbacked individuals.