IPA: /sɪmˈfoʊniəs/
KK: /sɪmˈfoʊniəs/
Having a pleasing and harmonious sound; in agreement or harmony with something else.
The symphonious melodies of the orchestra filled the concert hall with beauty.
Symphonious → It is formed from "symphonia" (from Greek "symphonia", meaning agreement or concord) and the suffix "-ous" (meaning full of). The word "symphonious" means full of harmony or agreement, particularly in sound.
Think of 'symphonia' which relates to harmony and agreement in music — that's why 'symphonious' means full of harmonious sounds.