IPA: /ˌɪrɪˈfɔːrməbl/
KK: /ɪrɪˈfɔrməbl/
Something that cannot be changed or improved.
The system was deemed irreformable by the experts, as it had too many flaws.
Irreformable → It is formed from "in-" (meaning not) and "reformare" (from Latin, meaning to form again or reshape) and "-able" (meaning capable of). The word "irreformable" means not capable of being reshaped or changed.
Think of something that cannot be 'reshaped' ('reformare') — the 'in-' means not, and '-able' means capable. This helps you remember that 'irreformable' refers to something that cannot be changed.