metanoia
noun·/ˌmɛt.əˈnɔɪ.ə/
A profound change of mind or heart, a turning that reorients one's inner life. Repentance in the older theological sense, but also transformation without explicit religious frame. Where regret looks backward, metanoia implies new direction, a turning toward what must be.
His apology carried metanoia—no theatrics, only the quiet sense that he had become someone else.
Etymology
From Greek metánoia “change of mind,” from meta- “after; beyond” + nous “mind.” In early Christian usage it was tied to repentance, but the root idea is broader and enduring: thought remade after an encounter with truth.
Related Words
repentancethe common theological equivalent
conversiona turning; often religious, sometimes ideological
reformationchange in form or behavior; more external
noeticpertaining to the mind; sharing the **nous** root