The quality of being companionable; the ability or suitability to be a good companion.
From companionable + -ity (noun suffix indicating quality or state). A formal philosophical or psychological term for the trait of good companionship.
Companionability is the kind of sophisticated noun that 18th and 19th-century philosophers loved—they created elaborate terms for human qualities and virtues, and this word appears in discussions of friendship and social character in Victorian literature.
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