indomitable

adj

Etymology: From Late Latin indomitābilis, from in- (“not”) + domitō, frequentative of domō (“to tame”). By surface analysis, in- + domitable.

1. Incapable of being subdued, overcome, or vanquished.

   “Personal courage and an indomitable self-confidence were the chief, indeed the only, qualities which sprang to light in General Feversham.”

   “But he was a youth of indomitable spirit, strong and agile as a wild cat.”