inalterable
Concise Oxford English Dictionary © 2008 Oxford University Press:
inalterable/ɪnˈɔːlt(ə)rəb(ə)l/
▶adjective unable to be changed.
– derivatives
inalterability noun,
inalterably adverb.
inalterability noun,
inalterably adverb.
'inalterable' also found in these Oxford entries:

