13
old-fashioned(adjective, dull, dead, out, square)
11
antiquated(adjective, plain, square, old, shabby)
11
dated(adjective, plain, dead, square, shabby)
11
obsolete
9
stale(adjective, dull, set, flat, silly)
9
tired(adjective, dull, set, flat, silly)
9
trite(adjective, dull, set, flat, silly)
8
archaic(adjective, plain, dead, out, old)
7
commonplace(adjective, characteristic, dull, set, flat)
7
hackneyed(adjective, dull, set, flat, silly)
7
out of date(expression, adjective, idiom)
7
outmoded(adjective, overfamiliar)
7
stereotyped(adjective, dull, set, flat, silly)
6
banal(adjective, dull, flat, silly, commonplace)
5
ancient
5
behind the times(expression, adjective, idiom, current, overfamiliar)
5
common(adjective, characteristic, dull, set, flat)
5
corny(adjective, dull, set, flat, silly)
5
platitudinous(adjective, dull, set, flat, silly)
5
stock(adjective, characteristic, dull, set, flat)
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APASmart Define. (2015). old hat thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/old_hat/thesaurus/synonyms
ChicagoSmart Define. 2015. "old hat thesaurus" https://smartdefine.org/old_hat/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, old hat thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/old_hat/thesaurus/synonyms>.
MLASmart Define. "old hat thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/old_hat/thesaurus/synonyms>