234 entries under noun topic. ×

22
increase(verb, support, take, cover)
20
addition(part, increase, delay, rise)
15
addendum(act, increase, delay, development)
15
complement(verb, part, increase, complete)
14
appendix(increase, delay, development, spread)
12
extension(part, increase, line, spread)
11
continuation(increase, delay, development, line)
11
accessory(part, increase, extra, addition)
10
adjunct(act, part, help, increase)
10
appendage(part, increase, delay, development)
10
appurtenance(part, increase, extra, addition)
9
affix(verb, continue, boost, attach)
9
increment(increase, gain, rise, extra)
8
annex(verb, part, advance, increase)
8
sequel(increase, line, extra, addition)
8
supplementation
7
accompaniment(part, rest, match, balance)
7
postscript(increase, line, extra, addition)
7
subsidiary(increase, extra, addition, extension)
6
augmentation(increase, delay, rise, influence)
<12345…10>
10 years ago|14k views|share |citing 
APASmart Define. (2015). supplement thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/supplement/thesaurus/synonyms
ChicagoSmart Define. 2015. "supplement thesaurus" https://smartdefine.org/supplement/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, supplement thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/supplement/thesaurus/synonyms>.
MLASmart Define. "supplement thesaurus" 22 December 2015. Web. 25 September 2026. <https://smartdefine.org/supplement/thesaurus/synonyms>