slovenly

adj

1. Having an untidy appearance; unkempt.

   “The same marks of indolence appeared in the care of his person; for every part of his dress was generally in disorder; and, though he was well made and handsome, yet his slovenly appearance made him disgustful to every one.”

   “Which would you sooner employ, a boy who was plainly, yet neatly clad, or one who had a slovenly appearance, though dressed in fine clothes?”

2. Dirty, unwashed; disorderly.
3. Careless or negligent; sloppy.

   “You say my pamphlet betrays the most slovenly rashness. But where is your proof?”

   “British goods have often been despatched in such careless and slovenly fashion that they arrived half broken. The same goods supplied by Germans were packed with such admirable care that they reached their destination quite safely.”

adv

1. In a slovenly manner.