• insouciantly, perfunctorily, sloppily
• dereliction, forgetfulness, inattention, indolence, insouciance, laxaty, neglect, negligence, nonchalance, recklessness, slothfulness
• to be slack at one's work
• to be negligent in one's work
• to be slack at one's work
• to disregard, to neglect
• dingy, down at the heel, forlorn, frowzy, neglected, raffish, raggedy-ass, raunchy, scruffy, sleazo, sleazy, uncared-for, untended
• negligible, unimportant
• blowzy, floppy, frumpish