115 entries under addition topic. ×

7
adjunct(noun, increase, delay, development, spread)
7
aggrandizement(noun, act, advance, increase, raise)
7
gain(noun, change, advance, increase, raise)
6
annex(noun, increase, delay, development, spread)
6
supplement(noun, increase, delay, rise, influence)
5
accrual(noun, increase, raise, gain, rise)
5
continuation(noun, increase, delay, development, spread)
5
hike(noun, act, advance, increase, raise)
5
widening(noun, advance, increase, delay, progress)
4
appendage(noun, increase, delay, development, spread)
4
appendix(noun, increase, delay, development, spread)
4
intensification(noun, advance, increase, raise, gain)
4
upturn(noun, act, advance, increase, raise)
3
acquisition(noun, increase, gain, return, benefit)
3
broadening(noun, increase, delay, development, spread)
3
burgeoning(noun, raise, gain, rise, development)
3
distension(noun, increase, delay, development, spread)
3
extra(noun, complement, supplement, appendage)
3
improvement(noun, change, advance, increase, progress)
3
lengthening(noun, increase, delay, development, spread)
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APASmart Define. (2015). augmentation thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/augmentation/thesaurus/synonyms
ChicagoSmart Define. 2015. "augmentation thesaurus" https://smartdefine.org/augmentation/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, augmentation thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/augmentation/thesaurus/synonyms>.
MLASmart Define. "augmentation thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/augmentation/thesaurus/synonyms>