IPA: /ɪˈnɛlɪɡəns/
KK: /ɪˈnɛlɪɡəns/
A quality of being unrefined or lacking grace and sophistication.
The inelegance of his speech made it difficult for the audience to stay engaged.
Inelegance is formed from "in-" (meaning not) and "elegantia" (from Latin, meaning elegance). The word describes a lack of elegance or refinement.
Think of 'not' ('in-') having 'elegance' — that's why inelegance means a lack of elegance.