AFAIK stands for “as far as I know”: afaik, the library still closes at eight. You share what you know and warn at once that it might be incomplete or out of date. It's chat and forum language; in a work email, write the full phrase.
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afaik = as far as I know; afaik, + statement; statement + afaik
- afaik, the library still closes at eight
- The update doesn't delete your files, afaik.
- afaik, nobody has booked the room yet, but I'll check
What changed
First versionAFAIK, the museum is definitely closed on Mondays.
RevisionAFAIK, the museum is closed on Mondays.
AFAIK already means “as far as I know, but I can't promise”. Adding definitely is like saying “as far as I know, for certain”: one part contradicts the other. Without definitely, the sentence makes sense.
IDK means “I don't know”: no answer at all. AFAIK gives an answer, with a caveat. IIRC means “if I remember correctly”: the doubt is about your memory. For sure means complete certainty.
Your turn
Choose the expression that admits limited knowledge: ___, the office is closed tomorrow, but I haven't seen the latest notice.
Show the answer
AFAIK — The writer hasn't seen the latest notice, so they hedge with AFAIK. For sure would promise a certainty they don't have.
Reply in a chat to a question about a timetable or whether a place is open. Use afaik and say what you'll check.
afaik, visitors can park behind the building, but I'll check the new signs
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