IPA: /dɪˈfiːtə/
KK: /dɪˈfitər/
A person or thing that defeats someone or something, often in a competition or conflict.
The champion was known as the ultimate defeater of all challengers.
Defeater is formed from "de-" (meaning down or away) and "facere" (meaning to do or make). The word describes someone who does away with or overcomes an opponent, thus defeating them.
Think of someone who 'does away' ('de-') with an opponent by 'making' them lose ('facere'). This helps you remember that a defeater is someone who defeats another.