23 entries under confirmed topic. ×

3
ineradicable(adjective, continue)
3
inveterate(adjective, continue, persistent, obstinate, insistent)
3
irradicable(adjective, continue)
3
set(adjective, continue, persistent, obstinate, insistent)
2
deep-rooted(adjective, continue)
2
entrenched(adjective, continue)
2
ingrained(adjective, continue)
2
settled(adjective, continue)
1
accepted
1
accustomed
1
chronic
1
deep-seated(adjective, continue)
1
dyed-in-the-wool(adjective, set, strong, hard, tough)
1
fixed
1
proved
1
seasoned
1
staid
0
firmly established
0
habituated
0
hardened
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APASmart Define. (2013). hard-shell thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/hard-shell/thesaurus/synonyms
ChicagoSmart Define. 2013. "hard-shell thesaurus" https://smartdefine.org/hard-shell/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2013, hard-shell thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/hard-shell/thesaurus/synonyms>.
MLASmart Define. "hard-shell thesaurus" 17 June 2013. Web. 21 September 2026. <https://smartdefine.org/hard-shell/thesaurus/synonyms>