AC is usually said in vine edits and it stands for "Audio Credit"
by PhilophobicHunter May 11, 2016
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In Counter-Strike, to kill the whole team. An ace is usually followed by relentless, verbal thrashing.

ayced aced ayce
"Z0mg, ACE!!! Baddies!!! #shittiesftwbbq
by keR. Magn3s1um March 30, 2008
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Asexual to any degree. Using "ace" for "asexual" gained popularity on AVEN (www.asexuality.org) and has inspired the use of the spade as a symbol of the asexual community.
1."Are you gay?"
"No, just ace."

2. "I'm an active member of the ace community."

3. "Something about purple cake makes me feel very ace..."
by Cheerio_Koroke December 24, 2008
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Exclamation that expresses something as being exceedingly good.
My boss is quitting and I'm finally getting that raise.

Aces!
by Josh October 12, 2003
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The god of all gods, we don't know how that majestic man birthed Zach,also his wife fingers his sons butthole
(walks into Zach's house)
All of group: AAAAACCCCCC
by Hskxirnsoxbs November 6, 2019
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When a baseball pitcher is dominating; on top of his game.
Mad Bum was acing today. What a beast!
by Duchene June 3, 2016
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