IPA: /ʌnˈtʃeɪndʒəbli/
KK: /ʌnˈtʃeɪndʒəbli/
In a manner that cannot be changed or altered.
The rules were set unchangeably, ensuring fairness for all participants.
Unchangeably → It is formed from "un-" (meaning not), "change" (from Old French *changier*, meaning to make or become different), and "-ably" (meaning in a manner that can be). The word "unchangeably" means in a manner that cannot be changed or made different.
Think of 'not' ('un-') allowing something to 'become different' ('change') in a way that can be done ('-ably'). This helps you remember that 'unchangeably' means something that cannot be changed.