What Does ACK Mean?

ACK means "Disgust" or "Acknowledge".

In internet forums and text-based messaging, ACK is typically used to indicate disgust, distaste or alarm at something that someone has just written. This usage of ACK is believed to stem from the term's similarity with the word "Yuck", which is commonly used to express strong distaste.

ACK is also often used to mean "Acknowledge", as in to confirm receipt or understanding of a message. This way of using ACK is probably based on military and law-enforcement usage of the word "Acknowledge" in their communications. It may also be based on data communication protocols, many of which are "ACK based", meaning that they automatically acknowledge receipt of messages by sending a coded receipt.

Summary of Key Points

"Disgust" is the most common definition for ACK on Snapchat, WhatsApp, Facebook, Twitter, and Instagram.

2: Quite easy to guess
Typical Users:
Adults and Teenagers

Image for ACK

When I write ACK, I mean this:

meaning of ACK
ACK usually indicates disgust or distaste.


Examples of ACK in Sentences

Here are examples of ACK being used in conversations:
  • Sam: Have you tried the frozen yogurt from the new store in the mall?
  • Rob: ACK! All that sugar makes me want to puke!
  • Ben: Pick you up at 7?
  • Kerry: ACK.

An Academic Look at ACK

When used to express surprise or disgust, ACK is an interjection. An interjection is not grammatically related to any other part of the sentence. It is included in a sentence (usually at the start) to express a sentiment such as surprise, disgust, joy, excitement, or enthusiasm. In formal writing, interjections are offset from the surrounding words with commas. For example:
  • ACK, what's that smell?
  • (Here, ACK is an interjection expressing disgust.)
  • ACK, What was that noise?
  • (Here, ACK is an interjection expressing alarm.)
When used to mean "Acknowledge", ACK is used as a standalone declarative sentence (i.e., a statement). In other words, it is not used as another part of speech within a wider sentence.

What Did We Used To Say?

Before the digital era, we would probably have said something like "Yuck" instead of using ACK to express disgust.

Summary of Key Points

Second Definition for ACK

This meaning was also noted:

2: Quite easy to guess
Typical Users:
Adults and Teenagers

Example of ACK Used in a Text


See Also

EW (exclamation of disgust) GRODY (disgusting) GROSS (disgusting) MINGING (horrible or disgusting)