1. 
[syn: deformed, distorted, ill-shapen, malformed, misshapen]
WordNet (r) 3.0 (2006):
malformed
    adj 1: so badly formed or out of shape as to be ugly; "deformed
           thalidomide babies"; "his poor distorted limbs"; "an ill-
           shapen vase"; "a limp caused by a malformed foot";
           "misshapen old fingers" [syn: deformed, distorted,
           ill-shapen, malformed, misshapen]
Moby Thesaurus II by Grady Ward, 1.0:
45 Moby Thesaurus words for "malformed":
   bandy, bandy-legged, baroque, bizarre, blemished, bloated,
   bowlegged, cacogenic, club-footed, defaced, deformed, disfigured,
   dwarfed, flatfooted, freak, freakish, gargoylish, grotesque,
   ill-made, ill-proportioned, ill-shaped, knock-kneed, marred,
   misbegotten, misproportioned, misshapen, monstrous, mutilated,
   out of shape, pigeon-toed, pug-nosed, rachitic, rickety, rococo,
   shapeless, simous, snub-nosed, stumpy, swaybacked, talipedic,
   teratic, teratogenic, teratoid, truncated, unshapely