5
frivolous(adjective, slight, detail, silly, trivial)
5
irrelevant(adjective, minor, outside)
5
boundary(noun, adjective, edge)
5
brim(noun, adjective, edge)
5
circumferential
5
edge(noun, adjective, edge)
5
inessential(adjective, extra, minor, petty, unnecessary)
5
surrounding
4
coastal(adjective, edge)
4
dispensable(adjective, unimportant, extra, petty, unnecessary)
4
extreme(adjective, edge)
4
perimetric(adjective, minor, outside)
4
tangential(adjective, minor, outside)
3
beside the point(expression, adjective, idiom, minor, outside)
3
border(noun, adjective, edge)
3
computer peripheral(noun, expression, idiom)
3
disinterested(adjective, objective)
3
distant
3
fringy
3
impartial(adjective, objective)
11 years ago|6.3k views|share |citing 
APASmart Define. (2015). peripheral thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/peripheral/thesaurus/synonyms
ChicagoSmart Define. 2015. "peripheral thesaurus" https://smartdefine.org/peripheral/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, peripheral thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/peripheral/thesaurus/synonyms>.
MLASmart Define. "peripheral thesaurus" 10 April 2015. Web. 21 September 2026. <https://smartdefine.org/peripheral/thesaurus/synonyms>