IPA: /hɑːˈmoʊniəsnəs/
KK: /hɑrˈmoʊniəsnəs/
The quality of being in agreement or harmony with others, creating a pleasing and balanced effect.
The harmoniousness of their voices made the song sound beautiful.
Harmoniousness → It is formed from "harmonious" (from Greek "harmonios", meaning in harmony) and the suffix "-ness" (meaning the state or quality of). The word "harmoniousness" refers to the state of being in harmony or agreement.
Think of 'harmony' as a state of agreement or balance, and remember that 'harmoniousness' means the quality of being harmonious.