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

64 entries under increase topic. ×

2
shore up(verb, expression, phrasal verb, support)
2
sustain(verb, support, keep, overcome)
1
add(verb, support, establish, extend)
1
add fuel to fire(verb, expression, idiom, support)
1
add to(verb, expression, support, boost)
1
ascend(verb, support, establish, extend)
1
augment(verb, support, boost, sustain)
1
back up(verb, expression, support, boost)
1
boost(verb, support, sustain, uphold)
1
build up(verb, expression, phrasal verb, support)
1
carry(verb, support, boost, sustain)
1
corroborate(verb, support, establish, extend)
1
emphasize(verb, support, boost, sustain)
1
enlarge(verb, support, establish, extend)
1
extend(verb, support, establish, powerful)
1
heat up(verb, expression, support, boost)
1
heighten(verb, support, establish, extend)
1
hype(verb, support, boost, sustain)
1
justify(verb, support, establish, extend)
1
lend a hand(verb, expression, idiom, support)
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APASmart Define. (2015). toughen thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/toughen/thesaurus/synonyms
ChicagoSmart Define. 2015. "toughen thesaurus" https://smartdefine.org/toughen/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, toughen thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/toughen/thesaurus/synonyms>.
MLASmart Define. "toughen thesaurus" 13 April 2015. Web. 26 September 2026. <https://smartdefine.org/toughen/thesaurus/synonyms>