IPA: /ˌkætəˈkrɛstɪkəl/
KK: /kætəˈkrɛstɪkəl/
Describing something that uses a word in a way that is not correct or is a misuse of language.
The author's catachrestical use of terms made the text difficult to understand.
Catachrestical → It is formed from "catachresis" (from Greek "katachresis", meaning misuse or incorrect use) and the suffix "-ical" (meaning pertaining to). The word "catachrestical" refers to something that pertains to a misuse of words or expressions.
Think of 'misuse' ('catachresis') to remember that 'catachrestical' relates to the incorrect use of language.