Short for "Drunk Anxiety", the anxiety you feel after a night of drinking because of things you may have done or said. Usually, you feel like the sky might fall on your head and you feel the need to be productive, lest you spontaneously combust. Often involves calling friends repeatedly the morning after to comfort yourself by hearing their D.A. as well. If they don't answer, this takes your D.A. to a new level.
Prononced "Dee Ehh"
"I got crunk last night with my co-workers, and today I have the worst D.A."
"I called my ex at 4am to let him know I still think about him...the D.A. is setting in today"
"I am so hungover, the D.A. is killing me"