91 entries under extend topic. ×

7
heighten(verb, support, get, advance, increase)
7
build up(verb, expression, phrasal verb, support, get)
7
advance(verb, support, get, help, increase)
7
steel(verb, support, close, set, fix)
6
add to(verb, expression, phrasal verb, support, help)
6
corroborate(verb, support, increase, establish)
6
deepen(verb, advance, increase, raise, rise)
6
multiply(verb, support, advance, increase, develop)
6
raise(verb, get, advance, increase, develop)
6
supplement(verb, support, help, advance, increase)
5
beef up(verb, expression, phrasal verb, support, increase)
5
step up(verb, expression, support, advance, increase)
5
redouble(verb, advance, increase, develop, raise)
5
temper(verb, close, set, fix, settle)
4
empower(verb, support, increase, establish)
4
further(verb, support, help, advance, increase)
4
inflate(verb, get, advance, increase, develop)
4
substantiate(verb, support, increase, establish)
3
add(verb, support, increase, establish)
3
aggravate(verb, get, advance, increase, develop)
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APASmart Define. (2015). reinforce thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/reinforce/thesaurus/synonyms
ChicagoSmart Define. 2015. "reinforce thesaurus" https://smartdefine.org/reinforce/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, reinforce thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/reinforce/thesaurus/synonyms>.
MLASmart Define. "reinforce thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/reinforce/thesaurus/synonyms>