[1] : The Collaborative International Dictionary of English v.0.48

sloppy \slop"py\, a. compar. sloppier; superl. sloppiest.
   from slop.
   wet, so as to spatter easily; wet, as with something slopped
   over; muddy; plashy; as, a sloppy place, walk, road.
   1913 webster
see also:
sloppier sloppiest slop 

[2] : WordNet (r) 2.0

sloppy
     adj 1: lacking neatness or order; "a sloppy room"; "sloppy habits"
     2: marked by great carelessness; "a most haphazard system of
        record keeping"; "slapdash work"; "slipshod spelling";
        "sloppy workmanship" syn: haphazard, slapdash, slipshod
     also: sloppiest, sloppier
see also:
haphazard slapdash slipshod sloppiest sloppier 

[3] : WordNet (r) 2.0

sloppier
     see sloppy
see also:
sloppy 

Sloppier >> S Words
Sloppier, definition of term: Sloppier
sloppier_pag1.html