90 entries under toughen topic. ×
| increase(verb, support, establish, extend, powerful) | |
| intensify(verb, support, increase, establish, extend) | |
| justify(verb, support, increase, establish, extend) | |
| make callous(verb, expression, dull, develop, rough) | |
| make firm(verb, expression, support, increase, establish) | |
| mount(verb, support, increase, establish, extend) | |
| multiply(verb, support, increase, establish, extend) | |
| numb(verb, dull, develop, rough, adjust) | |
| paralyze(verb, dull, develop, rough, adjust) | |
| powerful(verb, support, increase, establish, extend) | |
| regenerate(verb, support, increase, establish, extend) | |
| rejuvenate(verb, support, increase, encourage, establish) | |
| render insensitive(verb, expression, dull, develop, rough) | |
| renew(verb, support, increase, establish, extend) | |
| rise(verb, support, increase, establish, extend) | |
| roughen(verb, dull, develop, rough, adjust) | |
| set up(verb, expression, phrasal verb, support, make) | |
| sinew(verb, support, increase, establish, extend) | |
| step up(verb, expression, support, increase, secure) | |
| stun(verb, dull, develop, rough, adjust) |
For more, visit
Steel on
Power Thesaurus
| APA | Smart Define. (2016). steel thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/steel/thesaurus/synonyms |
| Chicago | Smart Define. 2016. "steel thesaurus" https://smartdefine.org/steel/thesaurus/synonyms (accessed October 1, 2026). |
| Harvard | Smart Define 2016, steel thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/steel/thesaurus/synonyms>. |
| MLA | Smart Define. "steel thesaurus" 24 January 2016. Web. 1 October 2026. <https://smartdefine.org/steel/thesaurus/synonyms> |