The word "most inharmonic" refers to something that is exceptionally discordant, jarring, or lacking in harmony. Its antonyms may include words such as harmonious, melodious, musical, tuneful, pleasing, and melodic, which refer to things that are melodious, sweet-sounding, and enjoyable to the ear. Other antonyms for "most inharmonic" might include words like euphonious, symphonic, rhythmic, or musical, which describe sounds that are well-balanced, harmonious, and pleasant to listen to. These words convey a sense of balance and cohesion, and are the opposite of "most inharmonic," which implies a lack of order or balance.