The word "most monophonic" means having a single melodic line with no accompaniment. Antonyms for this term can include "polyphonic," meaning having multiple simultaneous melodies, "harmonic," referring to the use of chords and harmonies, and "orchestral," indicating the use of various instruments to create a fuller sound. Other antonyms could include "layered," suggesting multiple tracks or layers of sound, "multifaceted," implying complexity and diversity within the music, and "eclectic," indicating a diverse range of styles and influences. All of these antonyms represent the opposite of the simple and unadorned nature of monophonic music.