Metanoia is a rhetorical or figurative device where the speaker retracts a statement just made and then restates it in a stronger or milder way — often for emphasis or clarification.

Example:
"He is the best teacher in the school — no, in the entire district!"
Here, the speaker withdraws the initial statement and replaces it with a stronger one.

Metaphysical refers to abstract or philosophical ideas. Metalanguage is language used to talk about language, such as grammatical terms like adverbial clause, etc. Metalepsis is a figurative and rhetorical device in which a figure of speech is used in a way that refers to another figure of speech, often creating a chain of indirect or layered meanings.