thoroughgoing vs unmitigated

thoroughgoing and unmitigated both are adjectives.

Word	Noun	Adjective	Verb	Adverb
thoroughgoing	No	Yes	No	No
unmitigated	No	Yes	No	No

thoroughgoing (adjective)	unmitigated (adjective)
performed comprehensively and completely; not superficial or partial	not diminished or moderated in intensity or severity; sometimes used as an intensifier
without qualification; used informally as (often pejorative) intensifiers