Examples from the Web for immitigable
He had never been clever; he smarted now under the revelation that all things considered he was an immitigable ass.Blacksheep! Blacksheep!|Meredith Nicholson
The private records, the public works of men of letters, teem with an immitigable fury!The Disowned, Complete|Edward Bulwer-Lytton
My maiden speech is a triumphant one; for the gentleman in sea-weed has nothing to offer in reply, save an immitigable roaring.Footprints on the Sea-Shore (From "Twice Told Tales")|Nathaniel Hawthorne
And again they pay the price: and so on to the last foreclosure and the immitigable end.The Battle Of The Strong, Complete|Gilbert Parker
Immitigable, im-it′i-ga-bl, adj. incapable of being mitigated.