IPA: /ˌæn.tɪˈnɒ.və.lɪst/
KK: /æntiˈnɑvəlɪst/
A person who writes works that oppose or reject traditional novel forms and conventions.
The antinovelist challenged the norms of storytelling in their latest work.
Antinovelist is formed from "anti-" (meaning against) and "novelist" (from Latin "novus", meaning new, and "-ist", meaning one who practices or is concerned with). The word describes someone who is against or opposes novel writing or novelists.
Think of someone who is 'against' ('anti-') those who write 'new' stories ('novelist'). This helps you remember that an antinovelist opposes novelists.