16
strengthen(verb, form, support, make, dull)
16
brace(noun, verb, form, support, make)
13
fortify(verb, form, support, make, close)
13
sword(noun, thing, arms)
13
weapon(noun, piece, heat, arm, firearm)
11
iron(adjective, strong, hard, strength, tough)
11
nerve(noun, verb, close, set, fix)
11
blade(noun, thing, arms)
10
reinforce(verb, support, close, set, fix)
9
gird(verb, form, support, make, close)
9
knife(noun, thing, tool, cutter, blade)
9
permanence
8
dagger(noun, thing, arms)
8
harden(verb, support, close, set, increase)
7
adamant(adjective, strong, hard, strength, tough)
7
animate(verb, encourage, excite, prepare, boost)
7
hearten(verb, encourage, raise, excite, prepare)
7
ready(verb, support, make, place, fix)
6
brand(noun, arms)
6
cheer(verb, encourage, excite, prepare, boost)
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APASmart Define. (2016). Steel thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/steel/thesaurus/synonyms
ChicagoSmart Define. 2016. "Steel thesaurus" https://smartdefine.org/steel/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2016, Steel thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/steel/thesaurus/synonyms>.
MLASmart Define. "Steel thesaurus" 24 January 2016. Web. 20 September 2026. <https://smartdefine.org/steel/thesaurus/synonyms>