13
unrepentant(adjective, impenitent)
10
impenitent(adjective, impenitent)
10
unapologetic
7
remorseless(adjective, impenitent)
7
unashamed
5
shameless
4
uncontrite(adjective, impenitent)
4
unregenerate
3
callous(adjective, impenitent)
3
obdurate
2
cussed
2
flinty
2
hardened(adjective, impenitent)
2
inexorable
2
obstinate
2
unregenerated
2
unregretful
1
bowelless
1
contrary
1
dog-eat-dog
11 years ago|1.4k views|share |citing 
APASmart Define. (2015). unremorseful thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/unremorseful/thesaurus/synonyms
ChicagoSmart Define. 2015. "unremorseful thesaurus" https://smartdefine.org/unremorseful/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, unremorseful thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/unremorseful/thesaurus/synonyms>.
MLASmart Define. "unremorseful thesaurus" 14 April 2015. Web. 20 September 2026. <https://smartdefine.org/unremorseful/thesaurus/synonyms>