0
galvanized
0
hard-edged(adjective, cynical, hard-boiled, hard-bitten)
0
hard-nosed(adjective, hard, unfeeling, unsympathetic, hardened)
0
hard as nails(expression, idiom, unfeeling, unbending, seasoned)
0
hardboiled(careless, cruel, apathetic)
0
impervious
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in the know
0
inspired
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instructed(experienced, hardened, veteran)
0
intoxicated
0
inure
0
long-serving
0
long-standing
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matured(experienced, hardened, veteran)
0
monomaniacal
0
old hand(expression, experienced, hardened, veteran)
0
pachydermatous
0
physically toughened(expression, idiom)
0
pitiless(adjective, unfeeling, unsympathetic, uncaring, insensitive)
0
practiced(experienced, hardened, veteran)
11 years ago|9.8k views|share |citing 
APASmart Define. (2015). toughened thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/toughened/thesaurus/synonyms
ChicagoSmart Define. 2015. "toughened thesaurus" https://smartdefine.org/toughened/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, toughened thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/toughened/thesaurus/synonyms>.
MLASmart Define. "toughened thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/toughened/thesaurus/synonyms>