noun

NAK

NAK (noun) means In computing and networking, a signal indicating that a message was not received correctly (short for "negative acknowledgement"). Example: “The modem sent a NAK after detecting a checksum error.”

noun

In computing and networking, a signal indicating that a message was not received correctly (short for "negative acknowledgement").

"The modem sent a NAK after detecting a checksum error."

How to use NAK

Learner’s notes

In plain EnglishA technical signal meaning "that message didn't come through properly" — the opposite of an ACK.

When to use it

Technical/computing jargon, almost always written in capitals as NAK.

Easily confused with

ack →

Word forms

naks plural

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The modem sent a _____ after detecting a checksum error.

Frequently asked questions

What does “NAK” mean?

The word “NAK” means in computing and networking, a signal indicating that a message was not received correctly (short for "negative acknowledgement"). In plain terms, a technical signal meaning "that message didn't come through properly" — the opposite of an ACK.

How do you use “NAK” in a sentence?

Here is “NAK” used in a sentence: “The modem sent a NAK after detecting a checksum error.”

What part of speech is “NAK”?

“NAK” is a noun.

What is the meaning of NAK?

"NAK" (noun) means in computing and networking, a signal indicating that a message was not received correctly (short for "negative acknowledgement").