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

40 entries under extend topic. ×

1
corroborate(verb, support, increase, establish)
1
enlarge(verb, support, increase, establish)
1
heighten(verb, support, increase, establish)
1
increase(verb, support, establish, boost)
1
justify(verb, support, increase, establish)
1
make firm(verb, expression, support, increase, establish)
1
mount(verb, support, increase, establish)
1
multiply(verb, support, increase, establish)
1
powerful(verb, support, increase, establish)
1
regenerate(verb, support, increase, establish)
1
renew(verb, support, increase, establish)
1
restore(verb, support, increase, encourage, establish)
1
rise(verb, support, increase, establish)
1
set up(verb, expression, support, increase, establish)
1
sinew(verb, support, increase, establish)
1
step up(verb, expression, support, increase, establish)
1
substantiate(verb, support, increase, establish)
1
tone up(verb, expression, support, increase, establish)
1
wax(verb, support, increase, establish)
0
establish(verb, support, increase, powerful)
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APASmart Define. (2015). toughen thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/toughen/thesaurus/synonyms
ChicagoSmart Define. 2015. "toughen thesaurus" https://smartdefine.org/toughen/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, toughen thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/toughen/thesaurus/synonyms>.
MLASmart Define. "toughen thesaurus" 13 April 2015. Web. 27 September 2026. <https://smartdefine.org/toughen/thesaurus/synonyms>