5
limp
5
mildewed(adjective, dull, flat, silly, commonplace)
5
ordinary(adjective, dull, set, simple, flat)
5
overworked(adjective, excite, usual)
5
passé(adjective, hard, last, original, deterioration)
5
plain(adjective, dull, weak, simple, flat)
5
putrescent
5
routine(adjective, dull, set, simple, flat)
5
soured
5
stereotypic(adjective, excite, usual, trite)
5
strong(adjective, offensive, sweet, rank, corrupt)
5
uninspired(adjective, dull, set, weak, flat)
5
uninspiring(adjective, dull, simple, flat, clean)
5
worn-out(adjective, dull, set, hard, flat)
4
antediluvian(adjective, original, old, outdated, obsolete)
4
arid(adjective, dull, hard, flat, stupid)
4
cliché(noun, adjective, dull, set, hard)
4
dated(adjective, last, original, outdated, antiquated)
4
dilapidated(adjective, deterioration)
4
disagreeable
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>