40 entries under comfortable topic. ×

25
casual(adjective, calm, open, free, smooth)
17
relaxed(adjective, calm, quiet, clear, open)
16
easy(adjective, calm, clear, open, simple)
16
unceremonious(adjective, calm, open, free, simple)
15
familiar(adjective, calm, clear, open, smooth)
15
natural(adjective, adverb, calm, open, smooth)
13
everyday(adjective, simple, plain, common, ordinary)
11
simple(adjective, easy, plain, ordinary, familiar)
8
friendly(adjective, calm, open, smooth, simple)
8
unpretentious(adjective, open, simple, ordinary, natural)
6
cozy(adjective, simple, easy, friendly, ordinary)
6
homely(adjective, simple, ordinary, familiar, natural)
6
unaffected(adjective, open, simple, ordinary, natural)
5
unassuming(adjective, simple, ordinary, unsophisticated)
4
liberal(adjective, calm, clear, open, easy)
3
officious(adjective, open, free, easy, friendly)
3
snug(adjective, calm, open, free, simple)
2
bold(adjective, open, free, easy, friendly)
2
calm(adjective, mild, relaxed, casual)
2
impudent(adjective, open, free, easy, friendly)
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APASmart Define. (2016). informal thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/informal/thesaurus/synonyms
ChicagoSmart Define. 2016. "informal thesaurus" https://smartdefine.org/informal/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2016, informal thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/informal/thesaurus/synonyms>.
MLASmart Define. "informal thesaurus" 29 February 2016. Web. 25 September 2026. <https://smartdefine.org/informal/thesaurus/synonyms>