104 entries under addition topic. ×

7
besides(adjective, adverb, new, spare)
7
frill(noun, treat, luxury, extravagance)
7
subsidiary(noun, adjective, support, increase, lower)
7
too(spare, extreme, excessive, also)
6
adscititious
6
appurtenance(noun, part, extension, accessory)
6
over(adjective, adverb, split, spare, unreasonable)
6
over and above(verb, expression, adjective, idiom, phrasal verb)
6
subordinate(noun, adjective, support, spare, inferior)
5
extension(noun, part, increase, accessory)
5
in reserve(expression, adjective, spare, reserve, excess)
4
additive(noun, increase, ingredient, supplement)
4
else(adjective, adverb, new, different)
4
furthermore(spare, also, too, likewise)
4
likewise(adverb, new, spare, additional)
4
moreover(adverb, spare, also, too)
4
trimming(noun, edge, bound, border)
3
accompaniment(noun, attachment, complement, decoration)
3
appendix(noun, increase, attachment, decoration)
3
complement(noun, increase, accessory, attachment)
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APASmart Define. (2016). extra thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/extra/thesaurus/synonyms
ChicagoSmart Define. 2016. "extra thesaurus" https://smartdefine.org/extra/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2016, extra thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/extra/thesaurus/synonyms>.
MLASmart Define. "extra thesaurus" 30 March 2016. Web. 23 September 2026. <https://smartdefine.org/extra/thesaurus/synonyms>