1

ack

interjection \ ˈak \

Definition of ack

used to express mild alarm or dismay
  • You should see the big wad of lint I just plucked from the trap of my clothes dryer. Ack! Where does all of that come from?
  • —Mary Hunt

First Known Use of ack

2001

in the meaning defined above

See Words from the same year
NEW! Time Traveler

2

ack

abbreviation

Definition of ack

acknowledge; acknowledgment

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