Unalterable is a related term of undeviating.
As adjectives the difference between unalterable and undeviating
is that unalterable is incapable of changing or being altered while undeviating is that does not deviate, veer or turn aside; unswerving.
unalterable
English
Adjective
(
en adjective)
incapable of changing or being altered
irrevocable or irreversible
Synonyms
* inalterable
Antonyms
* alterable
Derived terms
* unalterably
Anagrams
*
undeviating
English
Adjective
(
en adjective)
that does not deviate, veer or turn aside; unswerving
that does not change; steady