peinard

from penard ("libertine old man") with orthographic proximity to peine ("hardship") by popular etymology (a peinard analyzed as "worker in hardship, laborer") and a touch of hypercorrection: Littré refers to the Old French penart, panart ("knife", "penis, broadsword" see panard in the vulgar sense of "foot") and explains: "It is possible that by an easy metaphor, one said old penard, old broadsword, like old dagger for an old woman of ill repute." in père peinard replaces the older père pénard "man combining wisely work and rest" (1883).