IPA: /ˈkrɪplər/
KK: /ˈkrɪplər/
A person or thing that causes someone or something to become unable to walk or move properly.
The accident left him a crippler, unable to walk without assistance.
Crippler is formed from "cripple" (from Old English "cryppel", meaning to disable or make lame) and the suffix "-er" (meaning a person who performs an action). The word "crippler" refers to a person or thing that causes someone to be disabled or lame.
Think of someone who 'makes' ('-er') another person 'disabled' ('cripple') — that's why a crippler is someone who causes disability.