interjection
ACK
ak
ACK (interjection) means used to express disgust, alarm, or annoyance. Example: “Ack, I forgot my keys again!”
interjection
1
Used to express disgust, alarm, or annoyance.
"Ack, I forgot my keys again!"
noun
1
In computing, a short signal confirming that data was received.
"The server sent an ack back to confirm the file had arrived."
How to use ACK
Learner’s notesIn plain EnglishEither a casual sound of disgust, or (in tech) shorthand for a confirmation signal.
When to use it
The technical sense is common in networking and programming contexts; the interjection is informal.
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Word forms
- Plural
- ACKs
- Third person singular
- ACKs
- Past tense
- ACKed
Fill the gap
Can you complete this real example?
_____, I forgot my keys again!
Etymology
Shortened from "acknowledged," originally used in telegraph and radio signalling.
Related words
Rhymes for ACK
See all rhymes for ACK →Frequently asked questions
What does “ACK” mean?
The word “ACK” means used to express disgust, alarm, or annoyance. In plain terms, either a casual sound of disgust, or (in tech) shorthand for a confirmation signal.
How do you pronounce “ACK”?
“ACK” is pronounced ak (/æk/ in IPA).
How do you use “ACK” in a sentence?
Here is “ACK” used in a sentence: “Ack, I forgot my keys again!”
What is the opposite of “ACK”?
The opposite of “ACK” — its antonyms — are NAK and nack.
What part of speech is “ACK”?
Depending on how it is used, “ACK” can be an interjection and a noun.
How many meanings does “ACK” have?
“ACK” has 2 distinct senses listed in this dictionary. The most common is: used to express disgust, alarm, or annoyance.
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