What Does F4 Mean?

homesearch fF4

The Quick Answer

F4 is used online, in text messaging, and sometimes in speech, with the meanings "f*ck" and "to quit."

More Detail...

It is particularly popular on the the Roblox gaming platform. Here we take a look at each of these definitions and explain why parents might have cause to be concerned if they find their children are using F4 in their online interactions.

To Quit

image showing stop or quit sign

When it means "to quit," F4 refers to the F4 function key on a standard keyboard. When this key is pressed at the same time as the Alt key [Alt+F4], it is a keyboard shortcut that closes the currently active window. (If you pressed [Alt+F4] now, it would close the browser window.). For this reason, F4 (or f4) is often used in chat to indicate that someone is going to leave a game. More broadly, it is used to indicate that someone is going to leave or stop doing something. For example:

  • "I'm going to F4. Will be back online later."
  • "If you hate your job that much, you should F4 and do something different."
  • "Sam needs to lighten up, or I'm going to F4."
Check out our comprehensive dictionary of gaming terms.


image showing curse word

F4 is also used to mean "f¨*ck." In this context, it is based on the idea that it represents a four-letter word beginning with the letter F. Parents should watch out for this one, as the occasional use of F4 on gaming platforms such as Roblox may well just indicate that a player is quitting a game, but regular use may indicate something much uglier. As ever, context is key. For example:

  • "Let's F4 now. I have to do my homework." (Innocent and appropriate.)
  • "F4!!! You beat me again." (Probably not appropriate.)

Image for F4

When I write F4, I mean this:

meaning of F4

Parents may have cause for concern if they find their children are using F4.

Summary of Key Points for the First Definition

"To Quit" is, by far, the most common meaning for F4 when it is used in a text. (Bear in mind that it could have another meaning if used in a different context.)
Definition:To Quit
Type:Numeronym and Slang
Guessability:guessability level 4

4: Difficult to guess

Typical Users:typical user

Adults and Teenagers

Summary of Key Points for the Second Definition

"F*ck" is another common definition for F4.
Guessability:guessability level 3

3: Guessable

Typical Users:typical user

Adults and Teenagers

An Academic Look at F4

F4 is both a numeronym and a slang term. F4 is a numeronym, as it is an abbreviation made up of just numbers or of letters and numbers. Numeronyms can be formed in various ways, such as:
  • Shortening a word by replacing a sequence of letters with the count of those letters (e.g., i18n for "internationalization" and a11y for "accessibility").
  • Combining letters and numbers (e.g, K9 for "canine" and W3 for "World Wide Web").
  • Using numbers to represent letters or words (e.g., 143 for "I love you," 637 for "always and forever," and 5201314 for "I will love you for a lifetime").
Numeronyms were used long before the digital era. Many of the early ones were written on the envelopes of letters between lovers. They were often a coded message between the sender and the recipient, thought to allow secret expressions of love or passion. When used with the meaning "to quit," F4 is also a slang term. Slang is informal language that consists of words, phrases, and uses of language that are often restricted to a specific context or a particular group of users. Slang is not typically used in formal or professional settings.

Example of F4 Used in a Text

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