0
resilient(adjective, strong, tough, sturdy, permanent)
0
reverseless
0
robust
0
set(stable, constant, enduring, lasting, perpetual)
0
shatter-proof
0
shatterproof(adjective, strong, permanent)
0
sound
0
stammer
0
stirring
0
stout
0
straight(moral, principled)
0
substantial
0
trustworthy(moral, principled)
0
unbribable(moral, principled)
0
uncancellable
0
unchallengeable
0
unchanged
0
unerasable
0
unforgettable
0
uninfringeable
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APASmart Define. (2015). indestructible thesaurus. Retrieved September 25, 2026, from https://smartdefine.org/indestructible/thesaurus/synonyms
ChicagoSmart Define. 2015. "indestructible thesaurus" https://smartdefine.org/indestructible/thesaurus/synonyms (accessed September 25, 2026).
HarvardSmart Define 2015, indestructible thesaurus, Smart Define, viewed 25 September, 2026, <https://smartdefine.org/indestructible/thesaurus/synonyms>.
MLASmart Define. "indestructible thesaurus" 14 April 2015. Web. 25 September 2026. <https://smartdefine.org/indestructible/thesaurus/synonyms>