4
corny(adjective, boring, trite, banal, spiritless)
4
flat(adjective, boring, trite, banal, spiritless)
4
habitual(adjective, old, outdated, obsolete)
4
hackneyed(adjective, boring, trite, banal, spiritless)
4
humdrum(adjective, boring, trite, banal, spiritless)
4
insipid(adjective, boring, trite, banal, spiritless)
4
obsolete(adjective, old, outdated, habitual)
4
old(adjective, outdated, obsolete, habitual)
4
rancid(adjective, old, outdated, obsolete, habitual)
4
shabby(adjective, old, outdated, obsolete, habitual)
4
stagnant(adjective, old, outdated, obsolete, habitual)
4
stale(adjective, old, outdated, obsolete, habitual)
4
trite(adjective, boring, banal, spiritless)
3
boring(adjective, trite, banal, spiritless)
3
characterless(adjective, boring, trite, banal, spiritless)
3
conformistical(adjective, traditional, conservative, unchanging, undaring)
3
die-hard(adjective, traditional, conservative, unchanging, undaring)
3
hard hat(expression, idiom, traditional, conservative, unchanging)
3
monotonous(adjective, boring, trite, banal, spiritless)
3
old guard(expression, idiom, traditional, conservative, unchanging)
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APASmart Define. (2015). groundbreaking thesaurus. Retrieved September 24, 2026, from https://smartdefine.org/groundbreaking/thesaurus/antonyms
ChicagoSmart Define. 2015. "groundbreaking thesaurus" https://smartdefine.org/groundbreaking/thesaurus/antonyms (accessed September 24, 2026).
HarvardSmart Define 2015, groundbreaking thesaurus, Smart Define, viewed 24 September, 2026, <https://smartdefine.org/groundbreaking/thesaurus/antonyms>.
MLASmart Define. "groundbreaking thesaurus" 10 April 2015. Web. 24 September 2026. <https://smartdefine.org/groundbreaking/thesaurus/antonyms>