WordNet sense 1 (short and thick; as e.g. having short legs and heavy musculature):

dumpy, squat, stumpy, low-set, squatty

WordNet sense 2 (low in stature; not tall):

short

WordNet sense 3 (like or containing small sticky lumps):

lumpy

WordNet sense 4 (not shapely; not well-proportioned and pleasing in shape):

unshapely