slovenly /ˈslʌv.ən.li/adjective 3adverb 1forms 4 adjective3 •Having an untidy appearance; unkempt.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? — 1857 •Dirty, unwashed; disorderly. •Careless or negligent; sloppy.You say my pamphlet betrays the most slovenly rashness. But where is your proof? — 1848 adverb1 •In a slovenly manner. formsmore slovenly · slovenlier · most slovenly · slovenliest