"not lessened, not softened or toned down;" often in colloquial use "unconscionable;" 1590s, from un- (1) "not" + past participle of mitigate (v.).
unmitigated suffering
an unmitigated horror
an unmitigated lie
unmerciful
unmerited
unmet
unmindful
unmistakable
unmitigated
unmodified
unmolested
unmoor
unmotivated
unmounted