simple past tense and past participle of deform
"After years of neglect, the old wooden chair had deformed so badly that it could no longer be sat on."
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"
Unusual of shape; misshapen.
"The old bridge was deemed unsafe after inspectors found several deformed support beams that had twisted under years of heavy traffic."