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Webster 1913 Edition

Noun.

[Cf. F.

sociabilité

The quality of being sociable; sociableness.

Noun.

Sociableness; disposition to associate and converse with others; or the practive of familiar converse.

sociability ‎(plural sociabilities)

The skill, tendency or property of being sociable or social, of interacting well with others.
A true introvert, his sociability lagged behind others his age in the school.

the skill, tendency or property of being sociable or social