50 entries under obsolete topic. ×

8
stale(adjective, hard, corrupt, foul, disgusting)
6
crumbling(adjective, corrupt, original, deterioration, shabby)
4
moth-eaten(adjective, mean, hard, poor, last)
4
old(adjective, hard, last, sour, stale)
2
bygone(last, original, past, venerable, outdated)
2
time-worn(last, original, deterioration, past, traditional)
2
worn-out(adjective, mean, hard, poor, last)
1
aboriginal(last, original, past, traditional, venerable)
1
age-old(last, original, past, venerable, outdated)
1
antediluvian(adjective, last, original, stale, past)
1
antiquated(adjective, hard, last, original, remote)
1
antique(last, original, stale, past, venerable)
1
archaic(last, original, past, venerable, outdated)
1
cast-off(last, original, past, traditional, venerable)
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cast off(expression, original, outdated)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dated(last, original, past, venerable, outdated)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early(last, original, past, venerable, outdated)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erstwhile(last, original, past, venerable, outdated)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former(last, original, past, venerable, outdated)
<123>
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APASmart Define. (2015). decayed thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/decayed/thesaurus/synonyms
ChicagoSmart Define. 2015. "decayed thesaurus" https://smartdefine.org/decayed/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2015, decayed thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/decayed/thesaurus/synonyms>.
MLASmart Define. "decayed thesaurus" 10 April 2015. Web. 20 September 2026. <https://smartdefine.org/decayed/thesaurus/synonyms>