ack is another way of saying "meh", but it sounds german. You can say it if youre annoyed with someone. Or, if you don't believe somebody.
by Hannah December 3, 2004

A word in which one can describe extreme to mild frustration or anger to someone or something. (Mostly used in AIM or other instant messenger conversations).
by Mr. X December 27, 2004

ack is used to describe a boy named Noah. ack basically means “UGH” showing disgust. this term can be used with the name Noah.
“ACK! NO~ACK~ (noack) WHY WOULD YOU DO THAT??
by ackkkk_ May 22, 2020

"your such an ack!!"
by brittany January 6, 2005

by R. Kemp December 28, 2005

by Bear21 July 14, 2009
