62 entries under addition topic. ×

3
spread(noun, increase, raise, gain, rise)
2
accompaniment
2
annexation
2
boost(noun, advance, increase, raise, gain)
2
hike(noun, advance, increase, raise, rise)
2
inflation(noun, advance, increase, raise, gain)
2
junction
2
multiplication(noun, advance, increase, raise, gain)
2
raising(noun, advance, increase, boost)
2
superaddition
2
superfetation
2
superjunction
2
superposition
2
surge(noun, advance, increase, raise, gain)
2
swelling(noun, increase, raise, gain, rise)
2
upsurge(noun, advance, increase, raise, gain)
2
upturn(noun, advance, increase, raise, gain)
2
waxing(noun, advance, increase, raise, gain)
1
breakthrough(noun, advance, increase, raise, rise)
1
burgeoning(noun, raise, gain, rise, development)
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APASmart Define. (2016). accession thesaurus. Retrieved September 28, 2026, from https://smartdefine.org/accession/thesaurus/synonyms
ChicagoSmart Define. 2016. "accession thesaurus" https://smartdefine.org/accession/thesaurus/synonyms (accessed September 28, 2026).
HarvardSmart Define 2016, accession thesaurus, Smart Define, viewed 28 September, 2026, <https://smartdefine.org/accession/thesaurus/synonyms>.
MLASmart Define. "accession thesaurus" 31 March 2016. Web. 28 September 2026. <https://smartdefine.org/accession/thesaurus/synonyms>