The term "most stifled" denotes a state of being suppressed or restrained to a great degree. Its opposite or antonym would be "least stifled" or "unconstrained," which implies a situation where one has the freedom to express oneself without any hindrances or limitations. Other antonyms that could be used for "most stifled" include "liberated," "free," "emancipated," or "unfettered." These terms signify an absence of restrictions, barriers, or impediments, allowing for complete creative expression and open communication. Overall, these antonyms highlight the importance of breaking free from stifling circumstances and embracing a more liberated way of living.