From Unnatural Causes by P.D. James.
During the first part of this recital Miss Calthrop had assumed a quick variety of expressions - curiosity, disapproval, lubricity, and a gentle sadness - as if trying to decide which suited her best. She settled for the gentle sadness, a good woman grieving once more over the frailty of men.From Wiktionary.
Noun Singular lubricity Plural lubricities
1.The quality of being lubric; slipperiness; instability; as, the lubricity of fortune.
2.Smoothness; freedom from friction; also, property which diminishes friction; as, the lubricity of oil.
3.Lasciviousness; propensity to lewdness; lechery; incontinency.
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