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interjection. (used as an expression of dismay, frustration, surprise, or the like): Ack! I left the steaks on the counter, and my dog ate them both.
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The meaning of ACK is —used to express mild alarm or dismay. How to use ack in a sentence.

Acknowledgement

Data networks
In data networking, telecommunications, and computer buses, an acknowledgment is a signal that is passed between communicating processes, computers, or devices to signify acknowledgment, or receipt of message, as part of a communications protocol.... Wikipedia
The ACK signal in computing, telecom and data networks lets a destination station know that a message from a source was received. Learn about ACK, NAK, etc.
ack is a grep-like source code search tool. The latest version of ack is v3.7.0, released 2023-02-25.
ACK or Ack may refer to: Contents. 1 Arts and entertainment; 2 Technology; 3 Transportation; 4 Other uses; 5 See also. Arts and entertainment edit.
ACK For Whales hoping to take case to Supreme Court after appeal denied. Top Stories. Shorebird fencing questioned in marine mammal entanglements · A pair of ...
Archived Air Traffic Control Tower Recordings · Airport Rates and Charges · PFC Remittance payments can be made here. Search for Nantucket Memorial Airport.
The Alexa Connect Kit (ACK) is a new way for device makers to connect devices to Alexa without worrying about managing cloud services or complex networking ...
In other words, they are just shortcuts for clicking REPLY, entering the text "Ack" or "Done", and checking "Resolved".
Expressing distaste, alarm, or trepidation. Anagrams edit · AKC, cak ...