2
same
2
unfailing(adjective, certain, unchanging)
1
absolute
1
anchored
1
assiduous
1
ceaseless
1
come-through
1
continual
1
continuing
1
continuous
1
counted on
1
delivering
1
dependable
1
diligent
1
dyed-in-the-wool
1
endless
1
inexhaustible
1
invariable
1
moored
1
never-failing
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APASmart Define. (2013). rock solid thesaurus. Retrieved September 20, 2026, from https://smartdefine.org/rock_solid/thesaurus/synonyms
ChicagoSmart Define. 2013. "rock solid thesaurus" https://smartdefine.org/rock_solid/thesaurus/synonyms (accessed September 20, 2026).
HarvardSmart Define 2013, rock solid thesaurus, Smart Define, viewed 20 September, 2026, <https://smartdefine.org/rock_solid/thesaurus/synonyms>.
MLASmart Define. "rock solid thesaurus" 19 May 2013. Web. 20 September 2026. <https://smartdefine.org/rock_solid/thesaurus/synonyms>