91 entries under plain topic. ×

40
usual(adjective, dull, simple, reasonable, moderate)
30
habitual(adjective, simple, reasonable, common)
23
routine(adjective, dull, set, simple, flat)
21
normal(adjective, simple, reasonable, moderate)
14
free(adjective, close, open, direct, simple)
12
natural(adjective, calm, open, free, smooth)
12
unceremonious(adjective, simple, easy, friendly)
10
easy(adjective, calm, close, clear, open)
10
simple(adjective, informal, relaxed, common)
10
friendly(adjective, calm, close, open, love)
9
prosaic(adjective, dull, simple, flat)
8
unreserved(adjective, close, open, direct, free)
6
bold(adjective, close, open, cool, free)
6
comfortable(adjective, calm, close, simple, easy)
6
cozy(adjective, calm, close, simple, easy)
6
stereotyped(adjective, simple, common, ordinary)
6
workaday(adjective, simple, common, ordinary)
5
frank(adjective, clear, open, free, simple)
5
household(adjective, simple, common, ordinary)
4
folksy(adjective, simple, easy, relaxed)
10 years ago|34k views|share |citing 
APASmart Define. (2016). familiar thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/familiar/thesaurus/synonyms
ChicagoSmart Define. 2016. "familiar thesaurus" https://smartdefine.org/familiar/thesaurus/synonyms (accessed September 22, 2026).
HarvardSmart Define 2016, familiar thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/familiar/thesaurus/synonyms>.
MLASmart Define. "familiar thesaurus" 29 March 2016. Web. 22 September 2026. <https://smartdefine.org/familiar/thesaurus/synonyms>