Definition of immitigable
: not capable of being mitigated
immitigablyplay \-blē\ adverb
Origin and Etymology of immitigable
Late Latin immitigabilis, from Latin in- + mitigare to mitigate
First Known Use: 1576
Seen and Heard
What made you want to look up immitigable? Please tell us where you read or heard it (including the quote, if possible).