2
sweeten
2
swell(verb, advance, increase, raise, rise)
2
tack
2
tack on(verb, expression, phrasal verb, advance, increase)
2
up
2
wax(verb, advance, increase, raise, rise)
1
Doppelganger(noun, like, copy, equal, tally)
1
accessary
1
accident
1
accidental
1
accomplish(verb, close, end, develop, determine)
1
achieve(verb, close, end, develop, determine)
1
add fuel to fire(verb, expression, idiom, support, increase)
1
addenda
1
additional
1
additory
1
adjective
1
adjoin
1
afterword
1
aggravate(verb, advance, increase, raise, rise)
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APASmart Define. (2015). supplement thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/supplement/thesaurus/synonyms
ChicagoSmart Define. 2015. "supplement thesaurus" https://smartdefine.org/supplement/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2015, supplement thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/supplement/thesaurus/synonyms>.
MLASmart Define. "supplement thesaurus" 22 December 2015. Web. 22 September 2026. <https://smartdefine.org/supplement/thesaurus/synonyms>