IPA: /ɪˈnɛkspɪəbl/
KK: /ɪnˈɛkspɪəbl/
Something that cannot be forgiven or made right, often referring to serious offenses or wrongdoings.
The inexpiable nature of his actions left a lasting impact on the community.
Inexpiable is formed from "in-" (meaning not) and "expiabilis" (from Latin "expiabilis", meaning able to be atoned for). The word describes something that cannot be atoned for or is unforgivable.
Think of 'not' ('in-') being able to be 'atoned for' ('expiabilis') — that's why inexpiable means something that cannot be forgiven.