Incapable of being overcome, subdued, or vanquished; unconquerable.
[Late Latin indomitābilis : Latin in-, not; see IN-1 + Latin domitāre, to tame, frequentative of domāre, to subdue; see demə- in the Appendix of Indo-European roots.]
in·dom′i·ta·bili·ty, in·domi·ta·ble·ness n.
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Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.