50 entries under obsolete topic. ×

1
cast off(expression, original, outdated)
1
dated(last, original, past, venerable, outdated)
1
done(last, original, deterioration, past, traditional)
1
early(last, original, past, venerable, outdated)
1
erstwhile(last, original, past, venerable, outdated)
1
former(last, original, past, venerable, outdated)
1
hackneyed(last, original, past, venerable, outdated)
1
immemorial(last, original, past, traditional, venerable)
1
old-time(last, original, past, venerable, outdated)
1
olden(adjective, original, old, past, venerable)
1
once(last, original, past, traditional, venerable)
1
onetime(last, original, past, traditional, venerable)
1
original(last, past, traditional, venerable, outdated)
1
out-of-date(last, original, past, other)
1
outdated(last, original, previous, venerable, other)
1
outmoded(last, original, past, other, outdated)
1
past(last, original, venerable, other, outdated)
1
primeval(last, original, past, venerable, outdated)
1
primitive(last, original, past, venerable, outdated)
1
primordial(last, original, past, venerable, outdated)
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APASmart Define. (2015). crumbling thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/crumbling/thesaurus/synonyms
ChicagoSmart Define. 2015. "crumbling thesaurus" https://smartdefine.org/crumbling/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, crumbling thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/crumbling/thesaurus/synonyms>.
MLASmart Define. "crumbling thesaurus" 10 April 2015. Web. 25 September 2026. <https://smartdefine.org/crumbling/thesaurus/synonyms>