A racist and retarded-idiotic stereotype, meaning: a non-white person/people who selling out.

Just because they're listening to Mozart or Beethoven instead of Hip-hop, Jazz, Calypso, Keroncong, Gamelan, Taganing, Dangdut, Guzheng, or whatever, using proper and plain English (not a Pidgin or Creolized one like Engrish, Hinglish, Singlish, Pisin, or whatever), getting Straight-A+ grade, don't eat dogs, marrying a white man/woman for their inner quality (unlike any Sarong Party Girls did), having a successful career, or minding their own business doesn't make them a race traitor, a sell-out, you name it
Stop calling someone's behavior as "Act White", it's ignorant
by Sir. B December 13, 2020
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a term used with black people to call this person a sell-out. Bascially if you listen to any song not made by a black person, use the word "like" in a sentence more than once, and things even as good as getting good grades.
LaQuesha: so I, like went to the store yesterday and, like, i saw this cute shirt so i, like-
John: LaQuesha! stop acting white!
by TyCrystar April 27, 2007
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A term used to describe the lax attitude white folk tend to put forth in uncomfortable and awkward social settings. Usually the settings will involve former lovers, spouses, but everyone will try really hard to be positively sugary nice to each other to be polite and overly-friendly.
"Can you believe my ex asked me if I'd like to have dinner with her and her new husband?"

"Damn dude, that's acting white, does she think you're gonna start acting white too?"

"she's definitely acting white..."
by MintyLeila June 18, 2005
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