183 entries under adjective topic. ×

2
timeworn(dull, flat, commonplace, stale)
2
well-known(simple, plain, common, usual)
1
accustomed(plain, common, usual, intimate)
1
agreed(settled, finished, decided)
1
blah(stupid, ordinary, commonplace, bland)
1
bland(dull, stupid, ordinary, boring)
1
bygone(plain, dead, out, shabby)
1
cornfed(stupid, ordinary, commonplace, bland)
1
customary(plain, common, usual, intimate)
1
disused
1
dull(set, flat, plain, silly)
1
dull as dishwater(expression, idiom, stupid, ordinary)
1
dumb(stupid, ordinary, commonplace, bland)
1
exhausted(dull, flat, silly, commonplace)
1
familiar tune(expression, dull, flat, silly)
1
flat(dull, set, silly, common)
1
habitual(characteristic, common, ordinary, natural)
1
ho hum(expression, stupid, ordinary, commonplace)
1
insipid(dull, stupid, ordinary, boring)
1
known(simple, plain, common, usual)
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APASmart Define. (2015). old hat thesaurus. Retrieved September 26, 2026, from https://smartdefine.org/old_hat/thesaurus/synonyms
ChicagoSmart Define. 2015. "old hat thesaurus" https://smartdefine.org/old_hat/thesaurus/synonyms (accessed September 26, 2026).
HarvardSmart Define 2015, old hat thesaurus, Smart Define, viewed 26 September, 2026, <https://smartdefine.org/old_hat/thesaurus/synonyms>.
MLASmart Define. "old hat thesaurus" 10 April 2015. Web. 26 September 2026. <https://smartdefine.org/old_hat/thesaurus/synonyms>