8
stuffy(adjective, dull, close, flat, warm)
8
tainted(adjective, rank, corrupt, foul, disgusting)
8
timeworn(adjective, dull, set, beat, hard)
7
bland(adjective, dull, weak, flat, stupid)
7
bromidic(adjective, dull, set, flat, excite)
7
lifeless(adjective, dull, quiet, weak, simple)
7
malodorous(adjective, strong, hard, offensive, sweet)
7
mild(adjective, dull, weak, flat, boring)
7
moldy(adjective, strong, offensive, sweet, rank)
7
noisome(adjective, hard, rank, corrupt, foul)
7
platitudinous(adjective, dull, set, hard, simple)
7
run-of-the-mill(adjective, dull, set, flat, silly)
7
savorless(adjective, dull, weak, flat, boring)
7
shopworn(adjective, dull, set, hard, flat)
7
stagnant(adjective, quiet, strong, hard, flat)
7
unsavory(adjective, dull, strong, weak, flat)
7
warmed-over(adjective, dull, flat, excite, silly)
7
well-worn(adjective, dull, set, beat, hard)
7
worn(adjective, dull, set, flat, common)
6
ancient
11 years ago|26k views|share |citing 
APASmart Define. (2015). stale thesaurus. Retrieved September 23, 2026, from https://smartdefine.org/stale/thesaurus/synonyms
ChicagoSmart Define. 2015. "stale thesaurus" https://smartdefine.org/stale/thesaurus/synonyms (accessed September 23, 2026).
HarvardSmart Define 2015, stale thesaurus, Smart Define, viewed 23 September, 2026, <https://smartdefine.org/stale/thesaurus/synonyms>.
MLASmart Define. "stale thesaurus" 10 April 2015. Web. 23 September 2026. <https://smartdefine.org/stale/thesaurus/synonyms>