The condition of being slatternly, or of being a slattern(noun)
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Use "slatternliness" in a sentence
"The author, Edith Mirrielees, supported her indictment with a number of familiar charges: "slatternliness in the use of words, slapdashness in the shaping of sentences ... stories infected by the implausible, the unprepared for, the contradictory"; no gift for humor, a shortage of gusto, and the absence of substance."
"Stanbury gave the poor young woman no credit for her new simplicity, but put down the deficiency to the charge of domestic slatternliness."
"The slatternliness, suffering, shiftlessness, dirt and raggedness, were inducements to one of her charitable temperament to visit its inhabitants, having their relief and improvement in view; while her appreciation of the warm-heartedness and drollery of the Irish character afforded her genuine pleasure."