10
traditional(adjective, old, conservative, unchanging, outdated)
7
old-fashioned(adjective, old, traditional, conservative, unchanging)
6
outdated(adjective, old, obsolete, habitual)
6
platitudinous(adjective, boring, trite, banal, spiritless)
6
traditionalistic(adjective, traditional, conservative, unchanging, undaring)
6
unoriginal(adjective, boring, trite, banal, spiritless)
5
unexciting(adjective, boring, trite, banal, spiritless)
5
antiquated(adjective, old, outdated, obsolete, habitual)
5
constant(adjective, traditional, conservative, unchanging, undaring)
5
conventional(adjective, traditional, conservative, unchanging, undaring)
5
dull(adjective, boring, trite, banal, spiritless)
5
repetitive(adjective, boring, trite, banal, spiritless)
5
unchangeable(adjective, traditional, conservative, unchanging, undaring)
5
unchanging(adjective, traditional, conservative, undaring)
5
uninteresting(adjective, boring, trite, banal, spiritless)
5
wearisome(adjective, boring, trite, banal, spiritless)
4
antediluvian(adjective, old, outdated, obsolete, habitual)
4
banal(adjective, boring, trite, spiritless)
4
commonplace(adjective, boring, trite, banal, spiritless)
4
conservative(adjective, traditional, unchanging, undaring)
11 years ago|633 views|share |citing 
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>