IPA: /nɒnˈɒpərətɪk/
KK: /nɑnˈɑpərətɪk/
Describing something that is not related to or characteristic of opera, often referring to music or performance styles that are more straightforward or less dramatic than operatic works.
The concert featured nonoperatic music that appealed to a wider audience.
Nonoperatic → It is formed from "non-" (meaning not) and "operatic" (from Italian "operatico", meaning related to opera). The word "nonoperatic" means not related to or characteristic of opera.
Think of 'non-' meaning 'not' and 'operatic' relating to 'opera' — so nonoperatic describes something that is not related to opera.