0
accession
0
accretion
0
acting(extra, auxiliary)
0
add-on(noun, addition, supplement)
0
additament
0
additum
0
adscisuperfluous
0
adscititious
0
adventitious
0
alternate(extra, auxiliary)
0
alternative(extra, additional, auxiliary, another)
0
annexe
0
appearance
0
appelidage
0
appendage(noun, addition, supplement)
0
appurtenance(noun, addition, supplement)
0
artificial(extra, auxiliary)
0
attachment(noun, addition, supplement)
0
backing
0
backup(adjective, reserve, extra, replacement, temporary)
11 years ago|4.3k views|share |citing 
APASmart Define. (2015). supernumerary thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/supernumerary/thesaurus/synonyms
ChicagoSmart Define. 2015. "supernumerary thesaurus" https://smartdefine.org/supernumerary/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, supernumerary thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/supernumerary/thesaurus/synonyms>.
MLASmart Define. "supernumerary thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/supernumerary/thesaurus/synonyms>