75 entries under plain topic. ×

24
plain(adjective, simple, reasonable, clean, harsh)
23
unembellished(adjective, hard, simple, reasonable, severe)
22
simple(adjective, hard, reasonable, severe)
18
bare(adjective, hard, simple, severe)
18
undecorated(adjective, simple, clean, pure)
16
stark(adjective, dull, simple, pure)
15
unvarnished(adjective, simple, honest, pure)
13
austere(adjective, hard, simple, severe, clean)
13
severe(adjective, hard, simple, harsh)
11
basic(adjective, hard, simple, severe)
11
modest(adjective, hard, simple, severe, clean)
11
unornamented(adjective, hard, simple, reasonable, severe)
9
bald(adjective, simple, pure, cold)
9
direct(adjective, simple, natural, bold)
9
homely(adjective, simple, clean, pure)
9
pure(adjective, simple, clean, pure)
9
straightforward(adjective, simple, natural, straight)
8
natural(adjective, simple, reasonable, clean)
7
dry(adjective, simple, reasonable, moderate)
7
mere(adjective, hard, severe, clean)
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APASmart Define. (2015). unadorned thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/unadorned/thesaurus/synonyms
ChicagoSmart Define. 2015. "unadorned thesaurus" https://smartdefine.org/unadorned/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, unadorned thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/unadorned/thesaurus/synonyms>.
MLASmart Define. "unadorned thesaurus" 14 April 2015. Web. 26 September 2026. <https://smartdefine.org/unadorned/thesaurus/synonyms>