54 entries under common topic. ×

1
accustomed(adjective, plain, usual, intimate)
1
customary(adjective, plain, usual, intimate)
1
dull(adjective, set, flat, plain, silly)
1
flat(adjective, dull, set, silly)
1
habitual(adjective, characteristic, ordinary, natural)
1
known(adjective, simple, plain, usual)
1
mundane(adjective, stupid, ordinary, usual)
1
natural(adjective, characteristic, ordinary, usual)
1
plain(adjective, usual, shabby, customary)
1
prosaic(adjective, dull, set, flat, silly)
1
recognizable(adjective, simple, plain, usual)
1
regular(adjective, characteristic, ordinary, natural)
1
routine(adjective, dull, set, flat, plain)
1
unsophisticated(adjective, simple, usual, intimate)
1
usual(adjective, characteristic, ordinary, natural)
1
vapid(adjective, dull, set, flat, silly)
0
acclimated
0
at home with(expression, idiom, plain)
0
domestic(adjective, simple, usual, intimate)
0
familiar with(expression, plain)
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APASmart Define. (2015). old hat thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/old_hat/thesaurus/synonyms
ChicagoSmart Define. 2015. "old hat thesaurus" https://smartdefine.org/old_hat/thesaurus/synonyms (accessed September 24, 2026).
HarvardSmart Define 2015, old hat thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/old_hat/thesaurus/synonyms>.
MLASmart Define. "old hat thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/old_hat/thesaurus/synonyms>