122 entries under development topic. ×

22
increase(noun, verb, advance, delay, rise)
20
addendum(noun, increase, delay, spread)
19
supplement(noun, part, increase, delay, rise)
18
augmentation(noun, advance, increase, raise, delay)
17
extension(noun, part, increase, raise, rise)
16
adjunct(noun, part, increase, delay)
13
appendix(noun, increase, delay, spread)
12
appendage(noun, part, increase, delay)
11
annex(noun, part, increase, delay)
10
enlargement(noun, advance, increase, raise, delay)
10
wing(noun, increase, delay, spread)
9
boost(noun, advance, increase, raise, rise)
8
expansion(noun, advance, increase, raise, delay)
7
reinforcement(noun, advance, increase, rise, progress)
6
advance(noun, increase, progress, boost)
5
continuation(noun, increase, delay, spread)
5
evolution(advance, increase, progress, growth)
5
growth(noun, advance, increase, raise, rise)
5
increasing(noun, advance, increase, progress)
4
amplification(noun, increase, delay, rise)
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APASmart Define. (2015). addition thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/addition/thesaurus/synonyms
ChicagoSmart Define. 2015. "addition thesaurus" https://smartdefine.org/addition/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, addition thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/addition/thesaurus/synonyms>.
MLASmart Define. "addition thesaurus" 22 December 2015. Web. 20 September 2026. <https://smartdefine.org/addition/thesaurus/synonyms>