Another term used in the place of awesome. It can also be used when one agrees with something someone else has said, or agreeing to something. In agreement the word is said as unenthusiastically as possible, yet a nod is crucial. Is pronounced something like: waance
Girl 1: I got the new Coheed cd
Girl 2: Once!

Bob 1: Hey you coming with tonight?
Bob 2: Once. Like I would miss it

Guy 1: That movie was so gay.
Guy 2: Once.
by Nymphololly November 5, 2006
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Enough. Overtly so and inclusively.
by dajxd October 9, 2007
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Oral No Condom; what people use to get promotions.
Kim: "Hey, I got a promotion at work today!"
Andrew: "How did you get it?"
Kim: "ONC."
Andrew: "Oh, Oral No Condom, nice."
by VSU June 3, 2007
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fandom of best girl group TWICE. Forced to see all the hate other fandoms and ppl throw at them but despite that they always love TWICE, strongest fandom alive.
:Oh my gosh you’re all onces too?!!!
:yeah, so who’s your bias? Mine is Tzuyu because of her soft vocals, stunning dance, kind heart with purity, and mind-blowing visuals!!
by fredkoalas December 30, 2021
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The new album from Finnish metal band Nightwish. Much more experimental than previous albums, but still unmistakably Nightwish.
My god, Once is so damn good.
by Nudger June 8, 2004
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The worst insult you can call someone. It is typically used when you are really really pissed off at someone.
Wow coach why are you such a fucking once all the time?
by Skipah123 April 2, 2009
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A hypocritical fandom that thinks they are sweet, nice, and passive aggressive but then goes around bashing other groups. They think they are one of the most chill fandoms out there but are the main causes for fandom wars. Each and every perosn of that fandom on needs a fact check because they are just plain rude
Twice is the best GG out there, we onces are the nicest fandom because we never bash anyone.
by TwiceIsGreatButOncesNotSoMuch September 29, 2018
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