indomitable

From Late Latin indomitabilis, from in- (“not”) + domitare, frequentative of domare (“to tame”).

• (Received Pronunciation) IPA^(key): /ɪnˈdɒmɪtəbl̩/
• (General American) IPA^(key): /ɪnˈdɑmɪtəbl̩/

indomitable (comparative more indomitable, superlative most indomitable)

1. Incapable of being subdued, overcome, or vanquished.
   • 1902, A. E. W. Mason, The Four Feathers, ch. 1:

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

   • 1910, William Henry Hudson, A Shepherd's Life, ch. 7:

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

   • 2007, Richard Corliss, "When Betty Got Frank," Time, 31 March:

     Nobody came on to the movie camera—wrapped it in a bear hug and wrestled it to submission—like Betty Hutton. They called this 40s singer-actress "the Blitzkrieg blond" . . . . [S]he was indomitable, unstoppable.

• See Thesaurus:indomitable