say it: uh-NAWL-tur-uh-blee
unalterably is an adverb meaning "in an unalterable and unchangeable manner". It carries one recorded sense.
in an unalterable and unchangeable manner
“his views were unchangeably fixed”
Definitions, synonyms and semantic relations for unalterably come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.