Synonyms|270Antonyms|105|Broader|3Narrower|13Related|183

170 entries under verb topic. ×

1
jell(close, set, fix, settle)
1
justify(support, increase, establish, extend)
1
lend a hand(expression, idiom, support, increase)
1
make difficult(expression, strengthen, harden)
1
make firm(expression, support, increase, establish)
1
make it(expression, keep, overcome, endure)
1
make stronger(expression, idiom, support, powerful)
1
mount(support, increase, establish, extend)
1
multiply(support, increase, establish, extend)
1
overcome(keep, endure, resist, suffer)
1
pick up(expression, support, increase, boost)
1
pillar(support, increase, boost, sustain)
1
powerful(support, increase, establish, extend)
1
prepare(support, encourage, restore, uphold)
1
prop up(expression, support, increase, boost)
1
pull through(expression, keep, overcome, endure)
1
punch up(expression, support, increase, boost)
1
regenerate(support, increase, establish, extend)
1
renew(support, increase, establish, extend)
1
resist(keep, overcome, endure, suffer)
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APASmart Define. (2015). toughen thesaurus. Retrieved September 29, 2026, from https://smartdefine.org/toughen/thesaurus/synonyms
ChicagoSmart Define. 2015. "toughen thesaurus" https://smartdefine.org/toughen/thesaurus/synonyms (accessed September 29, 2026).
HarvardSmart Define 2015, toughen thesaurus, Smart Define, viewed 29 September, 2026, <https://smartdefine.org/toughen/thesaurus/synonyms>.
MLASmart Define. "toughen thesaurus" 13 April 2015. Web. 29 September 2026. <https://smartdefine.org/toughen/thesaurus/synonyms>