If you're out and you are flaunting it to those whom are in denial of your status. Context: when discussing the decision to wear cosmetics and the like and/or applying them in front of those whom do not now.
"My dad was trying to tell me to change and I was like ," Think twice! Im arching it out while you aren't looking."
by Fredh2o July 25, 2013
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To watch a show with a group of people. Typically used to replace "watch" in a sentence when talking about a TV show or movie.
Jake: Are we going to arch Riverdale's new episode today?
Tristan: No, I have to study for the SAT tonight.
Joe: Just do it tomorrow. We need to arch out.
*2 weeks later*
Jake: Can You be the last mortimer we arch for a while?
by Natsause March 19, 2021
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To snap ones teeth at another person.
Jimmy looked at Patty and said "arch".
by Jonathan February 03, 2005
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Kind of thing usually said by someone drunk as an Irish and disgusted by something gruesome
Math: Man I tell you that waiter is fucking flirting with you!!
Vince: Uh.. really?
Mel: Yup!!
Kev: Yup!!
Math: YUP!
Vince: ARCH!!!!!!!!
by Mathieu Grenier October 03, 2004
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Arch is a slang term for the phrase Archracist; meaning (comparative more archracist, superlative most archracist)

Extremely racist and hateful towards anyone who isn’t white.
Person 1 - “Stay away from that guy, he doesn’t like colored people”
Person 2 - “Why not?”
Person 1 - “He’s Arch and doesn’t believe colored people should have freedom or rights”
by ConcernedActivist December 21, 2019
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Joe: Where can I get some nasty food served to me by a 30 year old retarded guy?

Juan Pablo: the arches

Joe: You're right, let's go.

by funkyfingers22 June 25, 2008
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A short Chinese male often referred to as a leprechaun.
Smith: Haha, arch is short!
Schmidt: Yeah, like a leprechaun!
by babaloulou November 11, 2003
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