undefeatable
/ʌndɪˈfiːtəb(ə)l
/adjective
Unable to be defeated: France became for a long time an undefeatable force...
- Defeat your enemy by securing a safe and undefeatable position.
- We read Foucault, who proposed that we were all subject to an authority so nebulous as to be undefeatable.
- The key to victory is not so much to defeat one's enemy, instead it is to make oneself undefeatable.