What Does K3U Mean?

K3U means "I love you." The term K3U looks like I<3U (I heart you or I love you).

I<3U is an example of how text speak is more efficient than normal language (and also fun). K3U is a further efficiency.

Learn more ways of saying I love you.

Image for K3U

When I write K3U, I mean this: meaning of K3U K3U derives from I<3U (which means "I heart you," i.e., "I love you.")

Summary of Key Points

Definition for K3U

K3U means "I Love You." This is the most common definition for K3U on Snapchat, WhatsApp, Facebook, Instagram, TikTok, and Twitter.
Definition:I Love You
Type:Cyber Term
Guessability:guessability level 4
4: Difficult to guess
Typical Users:typical user
Adults and Teenagers


Examples of K3U in Sentences

Here is an example of K3U being used in written conversation:
  • Tony: Did you know K3U?
  • Jordan: That's so sweet.

An Academic Look at K3U

K3U is defined as a cyber term because some of its characters are used as substitutes for letters. Most cyber terms were introduced to reduce the number of key strokes required to write the word, but since the arrival of predictive texting and keyboards on mobile devices, this efficiency is no longer required.

Nevertheless, cyber terms are still regularly used to make messages more entertaining or to express individuality. Cyber terms differ from icons because they are not pictorial representations.

Using Numbers in Texts

This video shows the different ways that numbers are used in "text speak":

Example of K3U Used in a Text


"Cyber Speak" Test

You now know what K3U means, but are you good at Cyber Speak? Well, let's see!
gold cup

gold cup

gold cup

  • This test has questions.
  • A correct answer is worth 5 points.
  • You can get up to 5 bonus points for a speedy answer.
  • Some questions demand more than one answer. You must get every part right.
  • Beware! Wrong answers score 0 points.
  • 🏆 If you beat one of the top 3 scores, you will be invited to apply for the Hall of Fame.
Scoring System

Cyber Guru (+)
Cyber Hero (+)
Cyber Captain (+)
Cyber Sergeant (+)
Cyber Recruit (+)

Help Us Improve Cyber Definitions

  • Do you disagree with something on this page?
  • Did you spot a typo?
  • Do you know a slang term that we've missed?
Please tell us using this form.