183 entries under adjective topic. ×

5
unoriginal(dull, set, flat, silly)
4
antique
4
extinct
4
moth-eaten(dull, flat, silly, commonplace)
4
musty(dull, flat, silly, commonplace)
4
obsolescent
4
out-dated
4
out-of-date
4
threadbare(dull, flat, commonplace, stale)
4
unfashionable(plain, dead, out, square)
3
antediluvian
3
bromidic(dull, set, flat, silly)
3
conventional(characteristic, common, stupid, ordinary)
3
cut-and-dried(fixed, settled, finished, decided)
3
everyday(characteristic, dull, plain, common)
3
familiar(set, common, ordinary, usual)
3
ordinary(characteristic, dull, set, flat)
3
outdated(plain, square, old, stale)
3
stereotypical
3
warmed-over(dull, flat, silly, commonplace)
11 years ago|3.4k views|share |citing 
APASmart Define. (2015). old hat thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/old_hat/thesaurus/synonyms
ChicagoSmart Define. 2015. "old hat thesaurus" https://smartdefine.org/old_hat/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, old hat thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/old_hat/thesaurus/synonyms>.
MLASmart Define. "old hat thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/old_hat/thesaurus/synonyms>