(rare) Capable of being defeated.

plural of defeater

The act or instance of being defeated, of being overcome or vanquished; a loss. / The act or instance of defeating, of overcoming, vanquishing.

present participle of defeat

Acceptance of defeat without struggle.

One who defeats. / (logic, philosophy) a belief which, if proved to be true, would imply outright or indirectly that another belief were false.

plural of defeat

Third-person singular simple present indicative form of defeat

Subjugated, beaten, overcome.

simple past tense and past participle of defeat