Antonyms of adj symphonious

1 sense of symphonious

Sense 1
symphonic, symphonious -- (harmonious in sound; "the symphonic hum of a million insects")

INDIRECT (VIA harmonious) -> inharmonious, unharmonious -- (not in harmony)

Similarity of adj symphonious

1 sense of symphonious

Sense 1
symphonic, symphonious -- (harmonious in sound; "the symphonic hum of a million insects")
       => harmonious (vs. inharmonious) -- (musically pleasing)