170 entries under verb topic. ×

1
clot(close, set, fix, settle)
1
coagulate(close, set, fix, settle)
1
come through(expression, keep, overcome, endure)
1
compact(close, set, fix, settle)
1
corroborate(support, increase, establish, extend)
1
curdle(close, set, fix, settle)
1
dry(close, set, fix, settle)
1
emphasize(support, increase, boost, sustain)
1
enlarge(support, increase, establish, extend)
1
expose(keep, overcome, endure, resist)
1
extend(support, increase, establish, powerful)
1
freeze(close, set, fix, settle)
1
get through(expression, keep, overcome, endure)
1
grow hardened(expression, keep, overcome, endure)
1
grow strong(expression, keep, overcome, endure)
1
habituate(rough, prepare, adjust, scratch)
1
heat up(expression, support, increase, boost)
1
heighten(support, increase, establish, extend)
1
hype(support, increase, boost, sustain)
1
increase(support, establish, extend, boost)
11 years ago|4.3k views|share |citing 
APASmart Define. (2015). toughen thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/toughen/thesaurus/synonyms
ChicagoSmart Define. 2015. "toughen thesaurus" https://smartdefine.org/toughen/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2015, toughen thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/toughen/thesaurus/synonyms>.
MLASmart Define. "toughen thesaurus" 13 April 2015. Web. 30 September 2026. <https://smartdefine.org/toughen/thesaurus/synonyms>