English

Adjective

unvanquishable ‎(comparative more unvanquishable, superlative most unvanquishable)

1. That cannot be vanquished; undefeatable, inconquerable.
   • 1662, Thomas Stanley, The History of the Chaldaick Philosophy, Thomas Dring, page 52:

     [...] if a man shall give his mind to these [i.e. stones , and herbs , and charms] , he shall not only render his soul unvanquishable by passions, but shall also preserve his body the better in health: [etc.]

Antonyms

• vanquishable