IPA: /ˌɪn.ɑːrˈtɪs.tɪk/
KK: /ɪnɑrˈtɪstɪk/
Not having skill or taste in art; lacking artistic quality or appreciation.
The sculpture was criticized for its inartistic design that failed to capture the beauty of the subject.
Inartistic → It is formed from "in-" (meaning not) and "artistic" (from Latin "artisticus", meaning relating to art). The word "inartistic" means not relating to or lacking artistic qualities.
Think of 'not' ('in-') having to do with 'art' ('artistic') — that's why inartistic means lacking artistic qualities.