100 entries under adjective topic. ×

18
outer(obscure, minor, remote, objective)
14
outlying(area, obscure, remote, outside)
12
marginal(slight, edge, borderline, outside)
12
minor(unimportant, minor, outside)
11
outside(preposition, objective, external)
10
superficial(detail, silly, foolish, unimportant)
9
unnecessary(unimportant, extra, petty, irrelevant)
9
exterior(noun, slight, detail, trivial)
8
unimportant(silly, foolish, trivial, extra)
8
secondary(minor, outside)
7
external(slight, detail, trivial, minor)
7
extraneous(extra, petty, irrelevant, unconnected)
7
outermost(obscure, distant, minor, secluded)
7
surface(slight, detail, trivial, minor)
6
fringe(noun, edge)
6
extrinsic(objective, outside, external)
6
incidental(minor, outside)
6
unessential
5
frivolous(slight, detail, silly, trivial)
5
irrelevant(minor, outside)
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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>