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2.
A phrase used to congratulate someone on an accomplishment, a phrase commonly used by old men
sarah: Yes! I got my drivers license!
grandpa: Atta girl! I knew you could do it!
by hi7777777 February 17, 2010
 
1.
An expression of congratulations or praise directed at a female.

Comes from the expression "that's a good girl" which became "that a girl" and finally "attagirl."
"Attagirl! I knew you could do it."
by Brittbrat October 21, 2007
 
3.
a girl that is awesome, meaning "that-a-girl" or "what-a-girl", also see shiznit.
Paula is such an attagirl.
by Paula M. October 20, 2005
 
4.
Feminine variant of attaboy.
Sarah got an attagirl for finishing that project ahead of schedule.
by Silverdrake September 20, 2013
 
5.
the name of an indie-rock band from Toronto, Canada
ATTAGIRL makes my heart love
by Edward K. March 25, 2013
 
6.
the name of an indie-rock band from Toronto, Canada
ATTAGIRL makes my heart love.
by Edward K. March 25, 2013
 
7.
The name of a recreation company (Attagirl Athletics) dedicated to improving the health of its members through athletic competition.
Attagirl Athletics prevented me from becoming a never-was.
by Attagirl Athletics June 27, 2011