What does ACK mean?

Definitions for ACK

Here are all the possible meanings and translations of the word ACK.


  1. ack(Noun)

    A in RAF phonetic alphabet

  2. ack(Noun)

    acknowledgment signal

  3. ack(Interjection)


  4. ack(Interjection)

    Expressing distaste, alarm, or trepidation.

The New Hacker's Dictionary

  1. ACK

    1. [common; from the ASCII mnemonic for 0000110] Acknowledge. Used to register one's presence (compare mainstream Yo!). An appropriate response to ping or ENQ. 2. [from the comic strip Bloom County] An exclamation of surprised disgust, esp. in “Ack pffft!” Semi-humorous. Generally this sense is not spelled in caps (ACK) and is distinguished by a following exclamation point. 3. Used to politely interrupt someone to tell them you understand their point (see NAK). Thus, for example, you might cut off an overly long explanation with “Ack. Ack. Ack. I get it now”. 4. An affirmative. “Think we ought to ditch that damn NT server for a Linux box?” “ACK!”There is also a usage “ACK?” (from sense 1) meaning “Are you there?”, often used in email when earlier mail has produced no reply, or during a lull in talk mode to see if the person has gone away (the standard humorous response is of course NAK, i.e., “I'm not here”).

Suggested Resources

  1. ACK

    What does ACK stand for? -- Explore the various meanings for the ACK acronym on the Abbreviations.com website.


  1. Chaldean Numerology

    The numerical value of ACK in Chaldean Numerology is: 6

  2. Pythagorean Numerology

    The numerical value of ACK in Pythagorean Numerology is: 6

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Translations for ACK

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