1
unflagging
1
uniform
1
unintermitting
1
uninterrupted
1
unnodding
1
unqualified(adjective, certain, limited, definite, inflexible)
1
unrelaxing
1
unremitting
1
unsleeping
1
unswerving
1
untiring
1
unvarying
1
unwearied
1
unwearying
1
unwinking
1
unyielding(adjective, inflexible)
1
utterly attentive
1
weariless
0
adamantine(adjective, inflexible)
0
cast-iron(inflexible, intent, hard-and-fast)
11 years ago|2.5k views|share |citing 
APASmart Define. (2015). inalterable thesaurus. Retrieved September 21, 2026, from https://smartdefine.org/inalterable/thesaurus/synonyms
ChicagoSmart Define. 2015. "inalterable thesaurus" https://smartdefine.org/inalterable/thesaurus/synonyms (accessed September 21, 2026).
HarvardSmart Define 2015, inalterable thesaurus, Smart Define, viewed 21 September, 2026, <https://smartdefine.org/inalterable/thesaurus/synonyms>.
MLASmart Define. "inalterable thesaurus" 14 April 2015. Web. 21 September 2026. <https://smartdefine.org/inalterable/thesaurus/synonyms>