Origin: 1625–35; < LL indomitābilis < L indomit(us) untamed (in-in-3+ domitus, ptp. of domāre to subdue, tame, bring under control) + -ābilis-able; cf. L indomābilis
in·dom·i·ta·ble (ĭn-dŏm'ĭ-tə-bəl) adj. 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 Indo-European roots.] in·dom'i·ta·bil'i·ty, in·dom'i·ta·ble·ness n., in·dom'i·ta·bly adv.