Слово "irregularity". Англо-русский словарь Мюллера

"So it turns out there were a number of, shall we say, irregularities, associated with Black going to Azkaban.

But sometimes it happened that Marner, pausing to adjust an irregularity in his thread, became aware of the small scoundrels, and, though chary of his time, he liked their intrusion so ill that he would descend from his loom, and, opening the door, would fix on them a gaze that was always enough to make them take to their legs in terror.

The fourth and last wall contained three windows, from the first of which the view was as follows, Immediately beneath it there ran a high road on which every irregularity, every pebble, every rut was known and dear to me. Beside the road stretched a row of lime–trees, through which glimpses could be caught of a wattled fence, with a meadow with farm buildings on one side of it and a wood on the other—the whole bounded by the keeper's hut at the further end of the meadow, The next window to the right overlooked the part of the terrace where the "grownups" of the family used to sit before luncheon.

“Listen, then, Jane Eyre, to your sentence: to-morrow, place the glass before you, and draw in chalk your own picture, faithfully, without softening one defect; omit no harsh line, smooth away no displeasing irregularity; write under it,