29
perks
9
gap filler
3
ancillary
2
addition
2
annex
2
appendix
2
fitting
2
having said that(noun, add, plus, more)
2
next step(extension, persistence, continuation)
2
sequel
2
training wheels(part, vehicle, adjunct)
2
trimmings
1
additionally
1
apart from(noun, addition, complement, also)
1
auto accessory
1
computer accessory
1
continuation
1
counterpart
1
equivalent
1
in addition
<12>
10 years ago|408 views|share |citing 
APASmart Define. (2015). supplement thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/supplement/thesaurus/narrower
ChicagoSmart Define. 2015. "supplement thesaurus" https://smartdefine.org/supplement/thesaurus/narrower (accessed September 21, 2026).
HarvardSmart Define 2015, supplement thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/supplement/thesaurus/narrower>.
MLASmart Define. "supplement thesaurus" 22 December 2015. Web. 21 September 2026. <https://smartdefine.org/supplement/thesaurus/narrower>