The Collaborative International Dictionary of English v.0.48:
Slovenliness \Slov"en*li*ness\, n. The quality or state of being slovenly. [1913 Webster]WordNet (r) 3.0 (2006):
slovenliness n 1: a lack of order and tidiness; not cared for [syn: sloppiness, slovenliness, unkemptness] 2: habitual uncleanliness