Synonyms|1.3kAntonyms|412|Broader|19Narrower|42Related|784

122 entries under harden topic. ×

4
spread(verb, advance, increase, raise, rise)
4
steady(verb, fix, reinforce, thicken)
4
swell(verb, charge, advance, increase, develop)
4
wax(verb, advance, increase, develop, raise)
3
broaden(verb, advance, increase, raise, rise)
3
cement(verb, hold, close, set, fix)
3
expand(verb, charge, advance, increase, develop)
3
fix(verb, form, hold, make, close)
3
indurate(verb, dull, close, set, fix)
3
inure(verb, dull, develop, rough, adjust)
3
set(verb, support, hold, close, fix)
3
settle(verb, form, hold, make, close)
3
thicken(verb, close, set, fix, advance)
2
adapt(verb, make, dull, place, develop)
2
adjust(verb, form, make, dull, place)
2
amalgamate(verb, close, set, charge, fix)
2
bake(verb, close, set, fix, settle)
2
cake(verb, close, set, fix, settle)
2
callous(verb, dull, close, set, fix)
2
close(verb, hold, set, fix, secure)
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APASmart Define. (2016). strengthen thesaurus. Retrieved September 30, 2026, from https://smartdefine.org/strengthen/thesaurus/synonyms
ChicagoSmart Define. 2016. "strengthen thesaurus" https://smartdefine.org/strengthen/thesaurus/synonyms (accessed September 30, 2026).
HarvardSmart Define 2016, strengthen thesaurus, Smart Define, viewed 30 September, 2026, <https://smartdefine.org/strengthen/thesaurus/synonyms>.
MLASmart Define. "strengthen thesaurus" 3 March 2016. Web. 30 September 2026. <https://smartdefine.org/strengthen/thesaurus/synonyms>