What is a synonym for "defeater"?

Common synonyms include: champ, champion, conqueror, eliminator, hero, master.

How do you pronounce "defeater"?

Pronounced //dɪˈfiːtə(ɹ)//.

/dɪˈfiːtə(ɹ)/ noun

noun ·Rare ·Advanced level

Noun

1
One who defeats.
"defeater of the rebel hordes"
2
a belief which, if proved to be true, would imply outright or indirectly that another belief were false.

From defeat + -er.