What Does DKFS Mean?

DKFS means "Don't Know for Sure." The abbreviation DKFS means that you are uncertain if something is true or accurate. It can be used in relation to details, information or feelings, and lets someone know that what you are saying may not be 100 percent correct.

In America the phrase "for sure" is used to mean definitely e.g. "The parcel will arrive on Friday for sure."

Image for DKFS

When I write DKFS, I mean this: meaning of DKFS DKFS means you're uncertain of the facts.

Summary of Key Points

"Don't Know for Sure" is the most common definition for DKFS on Snapchat, WhatsApp, Facebook, Twitter, Instagram, and TikTok.
Definition:Don't Know for Sure
3: Guessable
Typical Users:
Adults and Teenagers


Examples of DKFS in Sentences

Here are examples of DKFS being used in conversations:
  • Steve: If I ever need a heart transplant I'd want my ex's. It's never been used.
  • Sam: DKFS, but I think you might be right.
  • Sarah: What time did Donna leave work yesterday?
  • Steph: 3pm I think, but I DKFS. Do you want me to find out?

An Academic Look at DKFS

DKFS is an initialism abbreviation. This means it is pronounced using its individual letters (i.e., Dee Kay Eff Ess), but as this is harder to say than "Don't know for sure," it is not often spoken using its letters. In other words, the abbreviation DKFS is for efficiency in writing and not efficiency in speech.

What Did We Say before Texting and Social Media?

Before the digital era, we might have said something like "that might not be correct" instead of DKFS.

Example of DKFS Used in a Text


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