IPA: /rɪˈvaɪlər/
KK: /rɪˈvaɪlər/
A person who criticizes or insults someone in a harsh or abusive way.
The reviler shouted insults at the players during the game.
Reviler → It is formed from "re-" (meaning again) and "vilis" (from Latin, meaning cheap or worthless). The word "reviler" refers to someone who speaks abusively or disparagingly about someone else, essentially 'speaking again' in a derogatory manner.
Think of someone who speaks 'again' ('re-') in a 'cheap' or 'worthless' way ('vilis') — that's why a reviler is someone who insults or disparages others.