letzter

In a sentence

• Er war der letzte, der den Raum verließ.

  He was the last to leave the room.

  In this sentence, 'letzte' is used as an adjective to denote the final person in the sequence who performed the action.

• Im letzten Jahr habe ich viele neue Dinge gelernt.

  Last year, I learned many new things.

  Here, 'letzten' (inflected form of 'letzter') describes the previous year in a temporal context.

• Die letzten Worte in einem Buch sind oft wichtig.

  The last words in a book are often important.

  In this case, 'letzten Worte' refers to the final words of a book, emphasizing the concluding nature of those words.