immutable

the word 'immutable' is built from latin components. the core root 'mut-' derives from the latin verb 'mutare', meaning 'to change', which itself can be traced back to the proto-indo-european root mei-, signifying 'to change, go, move'. this root is prefixed with the latin negative 'in-' (here assimilated to 'im-'), meaning 'not'. the suffix '-able', from latin '-abilis', indicates a quality or capacity. therefore, the literal construction is 'not capable of change'. this logical assembly from latin parts entered english in the late 14th century, directly preserving the classical sense of permanence and unchangeability.

Structure: im (not) + mut (change) + able (capable of) - im: latin origin, a variant of the prefix 'in-' meaning 'not'. - mut: latin origin, from the root 'mutare' meaning 'to change'. - able: latin origin (via old french), a suffix meaning 'capable of, fit for'.