Definition of ACK

ACK

interjection

as a question, to enquire whether someone is present.
Speaker: ACK?

Response: ACK.
- See more words with the same meaning: abbreviations (list of).
- See more words with the same meaning: computer slang.
- See more words with the same meaning: inquiries (list of).
Last edited on Sep 28 2008. Submitted by Anonymous on Sep 28 2008.
as a statement, to confirm one's presence. An appropriate response to ping.
Speaker: Are you there?

Response: ACK.
Speaker: ping

Response: ACK.
- See more words with the same meaning: abbreviations (list of).
- See more words with the same meaning: computer slang.
- See more words with the same meaning: present, near, directly.
Last edited on Apr 26 2011. Submitted by Anonymous on Sep 28 2008.
an exclamation of surprise or alarm.
Ack!
- See more words with the same meaning: exclamations (list of).
Last edited on Sep 28 2008. Submitted by Anonymous on Sep 28 2008.
yes.
Speaker: Do you want to shop for monitors?

Response: ACK.
Speaker: Do you want to shop for monitors?

Response: ACK, but we don't need to buy one today.
- See more words with the same meaning: abbreviations (list of).
- See more words with the same meaning: computer slang.
- See more words with the same meaning: yes, agreements (statements of).
Last edited on Jun 14 2015. Submitted by Anonymous on Sep 28 2008.

origin

ACK is a common abbreviation for "acknowledged," used in computing. The opposite of ACK is NAK.

Note that "ack" as an exclamation of surprise or alarm has no relation to computing.
Last edited on Apr 26 2011. Submitted by WalterGR (via TheJargonFile) on Sep 28 2009.

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Related words

Slang terms with the same meaning

Other terms relating to 'abbreviations (list of)':
tourney	Definitions include: shortened form of the word "tournament".
say wha?	Definitions include: a shortened form of "Say what?", which means "What did you say?"
mo	Definitions include: "moment".
fit	Definitions include: attractive; "hot".
fave	Definitions include: "favorite".
deli	Definitions include: "delicatessen."
OP	Definitions include: acronym for "original poster" - i.e. the person to submit (post) something to a website that permits discussion about submitted things.
V	Definitions include: "vehicle".
nas	Definitions include: abbreviation of "heinous."
stat	Definitions include: "statistic".
h	Definitions include: abbreviated form of "shut the hell up."
swole	Definitions include: To be pissed off.
nuke	Definitions include: to cook something in the microwave.
skho	Definitions include: skanky ho.
how you?	Definitions include: Short for how-are-you
(show 185 more)
Other terms relating to 'computer slang':
OMLG	Definitions include: acronym for "Oh my Lady Gaga".
WDYT	Definitions include: "what do you think".
copy-pasta	Definitions include: something repeatedly posted on an internet-based discussion forum.
ppl	Definitions include: abbreviated form of "people", used in electronic communication.
MTF	Definitions include: acronym for "more to follow".
wow	Definitions include: an exclamation of delight, surprise or amazement.
tks	Definitions include: "thanks".
BOFH	Definitions include: acronym for "bastard operator from hell".
nastygram	Definitions include: any email that is unpleasant in tone or content.
page in	Definitions include: A synonym of "swap in".
b	Definitions include: woman.
Infinite-Monkey Theorem	Definitions include: This theorem has been traced to the mathematician E'mile Borel in 1913, and was first popularized by the astronomer Sir Arthur Eddington.
Easter egg	Definitions include: Speculation about the origin of the term includes the custom of the Easter Egg hunt observed in the U.S. and many parts of Europe, as well Faberge' eggs containing hidden objects.
TW	Definitions include: acronym for "trigger warning".
S/N ratio	Definitions include: abbreviated form of signal-to-noise ratio.
(show 591 more)
Other terms relating to 'exclamations (list of)':
yuck	Definitions include: an exclamation of disgust.
crap	Definitions include: the noun senses of "crap" are mostly a subset of the uses of "shit."
hell, the	Definitions include: intensifier, usually expressing confusion or displeasure.
ugh	Definitions include: exclamation of displeasure.
peace	Definitions include: interjection to announce one's departure.
tango yankee	Definitions include: thank you.
hat tip	Definitions include: thanks.
gor blimey	Definitions include: "God blind me."
phew	Definitions include: transcription of the similar-sounding sigh or exclamation of relief.
yea	Definitions include: spelling variant of "yeah".
mother of god	Definitions include: exclamation of alarm / amazement.
spank you	Definitions include: "thank you."
in the hell	Definitions include: intensifier, used with an interrogative.
burn	Definitions include: to smoke marijuana.
okee-doke	Definitions include: "okay".
(show 291 more)
Other terms relating to 'inquiries (list of)':
WAYD	Definitions include: acronym for "What are you doing?"
ASL	Definitions include: online chatting acronym for "age, sex, location?"
How about them apples?	Definitions include: synonymous with "What do you think about that?"
no diggity	Definitions include: roughly equivalent to "serious."
who's own	Definitions include: used to inquire the owner of an item.
word	Definitions include: seriously.
for real	Definitions include: "Are you telling me the truth?" or "I'm telling you the truth."
Other terms relating to 'present, near, directly':
smack dab	Definitions include: directly.
cattywompus	Definitions include: out of alignment; "crooked".
Other terms relating to 'yes, agreements (statements of)':
go crazy	Definitions include: an invitation to proceed with a requested action.
right on	Definitions include: extremely accurate.
yisss	Definitions include: "yis".
roger	Definitions include: affirmative.
okee-doke	Definitions include: "okay".
Simon	Definitions include: the "tortured artist" half of a pair of people.
and you know this, man	Definitions include: of course; definitely.
alrighty	Definitions include: "all right".
way	Definitions include: very.
yis	Definitions include: an excited "yes".
yiss	Definitions include: alternate spelling of "yis".
for reals	Definitions include: "for real", i.e. "seriously".
in it	Definitions include: abbreviated form of "isn't it".
fo sheezie	Definitions include: "for sure".
straight	Definitions include: fine; okay.
(show 44 more)