75 entries under plain topic. ×

7
unpretentious(adjective, simple, reasonable, clean)
6
rustic(adjective, simple, clean, pure)
6
uncluttered(adjective, simple, clean, pure)
6
unostentatious(adjective, simple, reasonable, clean)
5
Spartan(adjective, simple, clean, pure)
5
dull(adjective, simple, pure, ordinary)
5
ordinary(adjective, simple, reasonable, pure)
5
unadulterated(adjective, simple, clean, pure)
4
blunt(adjective, hard, simple, severe)
4
clean(adjective, simple, pure, ordinary)
4
genuine(simple, correct, natural, straightforward)
4
homespun(adjective, plainness)
4
open(adjective, simple, natural, straightforward)
4
sheer(adjective, hard, severe, clean)
4
unaffected(adjective, simple, reasonable, clean)
4
unelaborate(adjective, simple, clean, pure)
3
artless(adjective, simple)
3
honest(adjective, simple, natural, straightforward)
3
innocent(adjective, simple, pure, natural)
3
restrained(adjective, simple, pure, basic)
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APASmart Define. (2015). unadorned thesaurus. Retrieved September 27, 2026, from https://smartdefine.org/unadorned/thesaurus/synonyms
ChicagoSmart Define. 2015. "unadorned thesaurus" https://smartdefine.org/unadorned/thesaurus/synonyms (accessed September 27, 2026).
HarvardSmart Define 2015, unadorned thesaurus, Smart Define, viewed 27 September, 2026, <https://smartdefine.org/unadorned/thesaurus/synonyms>.
MLASmart Define. "unadorned thesaurus" 14 April 2015. Web. 27 September 2026. <https://smartdefine.org/unadorned/thesaurus/synonyms>