66 entries under toughened topic. ×

1
indurated(adjective, hard, unfeeling, unsympathetic, established)
1
irreverent(adjective, hard, unfeeling, unsympathetic, prepared)
1
obdurate(adjective, hard, unfeeling, unsympathetic, hardened)
1
obtuse(adjective, hard, unfeeling, unsympathetic, prepared)
1
prepared(adjective, hard, familiar, knowledgeable, unfeeling)
1
resistant(adjective, hard, unfeeling, unsympathetic, prepared)
1
steeled(adjective, hard, unfeeling, unsympathetic, prepared)
1
torpid(adjective, dull, quiet, hard, flat)
1
unashamed(adjective, hard, unfeeling, unsympathetic, prepared)
1
unbending(adjective, hard, unfeeling, unsympathetic, hardened)
1
uncompassionate(adjective, hard, unfeeling, unsympathetic, hardened)
1
unemotional(adjective, hard, unfeeling, unsympathetic, prepared)
1
unfeeling(adjective, hard, unsympathetic, hardened, unbending)
1
unrepenting(adjective, hard, unfeeling, unsympathetic, prepared)
1
unresponsive(adjective, dull, quiet, hard, flat)
1
unsentimental(adjective, cynical, hard-boiled, hard-bitten)
1
unsubmissive(adjective, hard, unfeeling, unsympathetic, prepared)
1
unsusceptible(adjective, hard, unfeeling, unsympathetic, hardened)
1
unsympathetic(adjective, dull, quiet, hard, flat)
0
blind to(expression, adjective, hard, unfeeling, unsympathetic)
11 years ago|10k views|share |citing 
APASmart Define. (2015). accustomed thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/accustomed/thesaurus/synonyms
ChicagoSmart Define. 2015. "accustomed thesaurus" https://smartdefine.org/accustomed/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, accustomed thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/accustomed/thesaurus/synonyms>.
MLASmart Define. "accustomed thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/accustomed/thesaurus/synonyms>