What does 'p.s.' mean at the end of a letter?

**The reasoning** "P.S." stands for **postscript**, which comes from the Latin words *post* (meaning "after") and *scriptum* (meaning "written"). It literally means "written after." When you finish writing a letter and suddenly remember something you forgot to include, instead of rewriting the entire letter, you add "P.S." at the bottom and write that extra thought. It's an afterthought or addition made after the main message is complete. For example: *"Looking forward to seeing you soon. Best regards, Chidi P.S. Don't forget to bring your textbook!"* **Why the wrong options tempt you** **A) Please send** — Sounds polite and letter-like, so it feels reasonable, but letters already have closing phrases for requests. **C) Personal signature** — You *do* sign letters, so this seems connected, but your actual signature serves that purpose. **D) Public service** — "P.S." is common in formal contexts, making this sound official, but it has nothing to do with public announcements. **Quick takeaway** P.S. = Postscript = something you add *after* you've already finished writing your main message.