verb

mahnen

urge

Jemanden ernst daran erinnern, etwas zu tun oder zu lassen.

The verb mahnen has two primary meanings in German:

To remind: To call someone's attention to a task, a promise, or an obligation that they might have forgotten or ignored.
To urge or admonish: To strongly advise or warn someone to behave in a certain way or to take a specific action, often with a moral or cautionary tone.
Financial context: Specifically in business or legal contexts, it means to send a formal reminder or a demand for payment to a debtor who has failed to settle a bill by the due date.

Grammar: It is a regular (weak) verb. Its principal parts are mahnen (infinitive), mahnte (past), and gemahnt (past participle). It is typically used with the preposition an + accusative when referring to a reminder (an jemanden/etwas mahnen).
Word origin: It stems from the Old High German word manōn, which means "to remind," "to warn," or "to demand." It is etymologically related to the word Mensch (human) and the English word mind, tracing back to the Proto-Indo-European root men- (to think).