1510s, "low, base, lewd," later "untidy, dirty" (1560s), from sloven + -ly (1). Related: Slovenliness; also in this sense was slovenry (1540s), which OED reports in common use early 17c.
例文
1. Lisa was irritated by the slovenly attitude of her boyfriend Sean.
リサはボーイフレンドのショーンのだらしない態度に腹を立てている。
2.The officers were rather slovenly in their methods.
これらの役人は行動がばらばらである。
3.He grew lazy and slovenly in his habits.
彼はだらしない習慣を身につけた。
4.People were scandalized at the slovenly management of the company.
人々は同社のずさんな経営に憤慨している。
5.Such slovenly work habits will never produce good products.