IPA: /ʌnˌtʃeɪndʒəˈbɪləti/
KK: /ʌnˌtʃeɪndʒəˈbɪləti/
The quality or state of being unable to be changed or altered.
The unchangeability of the law means that it cannot be modified without a formal process.
Unchangeability → It is formed from "un-" (meaning not), "change" (from Old French *changier*, meaning to make or become different), and "-ability" (meaning the quality of being able to). The word "unchangeability" means the quality of not being able to change or remain constant.
Think of 'not' ('un-') being added to 'change' — this helps you remember that 'unchangeability' refers to the quality of something that cannot change.