The quality of being friendly and liking to be with other people.
Sociablenesses is a good thing because it means someone enjoys being with others and is nice to them.
Examples:
Her sociablenesses makes everyone feel welcome.
I like his sociablenesses because he is always happy to see me.
The cat's sociablenesses surprises me.
The dog's sociablenesses is better than the cat's.
His sociablenesses is so big, he makes friends with everyone.
The sociablenesses of the party makes it fun for everyone.