late 15c., "lasciviousness," from Middle French lubricité or directly from Medieval Latin lubricitatem (nominative lubricitas) "slipperiness," from Latin lubricus "slippery; easily moved, sliding, gliding;" figuratively "uncertain, hazardous, dangerous; seductive," from suffixed form of PIE root *sleubh- "to slip, slide." Sense of "oiliness, smoothness" in English is from 1540s; figurative sense of "shiftiness" is from 1610s.
The priests had excellent cause to forbid us lechery: this injunction, by reserving to them acquaintance with and absolution for these private sins, gave them an incredible ascendancy over women, and opened up to them a career of lubricity whose scope knew no limits. [Marquis de Sade, "Philosophy in the Bedroom"]
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