Why “slatternliness” is a great word
The quality of being habitually unkempt, dirty, or slovenly in appearance and domestic habits, particularly ascribed to a woman. From the adjective *slatternly* (meaning 'slovenly') + the noun-forming suffix *-ness*. The adjective *slatternly* is itself derived from the noun *slattern* (a slovenly woman) + the suffix *-ly*. The noun *slattern*'s origin is uncertain but may be related to dialectal words implying slovenliness or slopping over. Unlike 'slovenliness,' a general state of carelessness, or 'sluttishness,' which often carries a sharper charge of moral judgment, slatternliness fixates on a specifically gendered and domestic dereliction. It is the grease-thick skillet abandoned in cold water, the stocking draped over a chair back for days, and the particular dust that accumulates where a woman was expected to have passed with a cloth; a word that measures the distance between a person and an imagined standard of feminine upkeep, finding failure not in wickedness but in the exhausted, visible collapse of care.
Definitions & examples from Wiktionary (CC BY-SA 3.0).