say it: i-MYOO-tuh-buhl
immutable is an adjective meaning "not subject or susceptible to change or variation in form or quality or nature". It carries 2 recorded senses.
not subject or susceptible to change or variation in form or quality or nature
“the view of that time was that all species were immutable, created by God”
Definitions, synonyms and semantic relations for immutable 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.