The antonyms for the word "most imitation" would be authentic, original, genuine, unique, and real. These terms signify something that is not a copy or an imitation but is, in fact, the real deal. Authenticity is highly valued in various aspects of life, be it art, fashion, or personality. Being genuine and unique is a trait that sets individuals and entities apart and makes them stand out. Therefore, while imitation may be the sincerest form of flattery, one has to strive to be authentic and original to achieve success and recognition in any field.