The word "most immusical" refers to someone who lacks musical ability or skill. Its antonyms, on the other hand, are words that describe someone with musical talent or ability. These could include words such as musical, melodious, harmonious, rhythmic, tuneful, skillful, talented, and gifted. Someone who is musical has a natural talent for understanding and creating music, while a melodious or harmonious person can produce pleasing sounds or melodies. A rhythmic or tuneful person has a good sense of rhythm or melody, while a talented or gifted individual possesses exceptional ability or aptitude in music. Ultimately, the antonyms of "most immusical" describe someone who is a natural musician and able to create beautiful music.