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unconquerable

1 ENTRIES FOUND:
unconquerable /ˌʌnˈkɑːŋkərəbəl/ adjective
unconquerable
/ˌʌnˈkɑːŋkərəbəl/
adjective
Britannica Dictionary definition of UNCONQUERABLE
: not able to be conquered or defeated
: not able to be dealt with successfully