It was annoying to come upon that everlasting slovenliness in the farm work against which he had been striving with all his might for so many years.
There are no more uses of "slovenly" in the book.
Show samples from other sources
I could tell that Go had gone to meet with the doctor by herself, taken her studious notes in her slovenly handwriting, and she was teary as she tried to decipher what she’d written.
Gillian Flynn -- Gone Girl
For the first time, I felt cold to her, like an ice sheet had fallen between us, and a picture of her began entering my mind, her dark form moving through the corridors of a dingy, slovenly house, peals of surly laughter trailing after her.