Definitions for unalterably
Random House Webster's College Dictionary
un•al•ter•a•bleʌnˈɔl tər ə bəl(adj.)
not capable of being altered, changed, or modified.
Category: Common Vocabulary
Origin of unalterable:
unalterably, unchangeably, unassailably, immutably(adverb)
in an unalterable and unchangeable manner
"his views were unchangeably fixed"
In an unalterable manner; in a manner that makes it impossible to be altered.
First experiences are always the most memorable because they fix themselves in the mind unalterably and most powerfully.