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A Cantonese (Chinese) word for a person or persons of Caucasian descent. In the past, it was meant as a demeaning racial slang towards people of white decent. However; over time it has lost its meaning and is no longer meant as a degrading word. It is now used freely and carries no derogatory meanings.

The more politically correct term is bakyen which means white people/person. However, this term is not as prevalent as guailo. Another common version of this term is bakguai which means "white demon"; which too no longer carries a derogatory meaning.

The literal meaning of "guailo" means "demon guy", "ghost guy".

Alternate Spellings: guilo, guilou, guailou
Why are there so many guailo here at this restaurant?
Guailo don't know how to eat Chinese food.
guailo by Huy Ly April 1, 2008
Related Words
Person of Anglo-Saxon/Caucasian descent. Taken from the cantonese description of a "white ghost/dead white man". Meant to be used as any other racial slur/remark when refering to a person with a white-skinned complexion.
Synonym: Cracker, Honkey, Redneck, etc.
Antonym(s): Nigger, Spic, Wetback, Chink, slant, etc.
Why is it only the guailos get the manager jobs?
Damn guailos, think they're better than everyone else
This guailo is talkin' to me but he ain't saying shit
Guailo by Adrian Rojas April 5, 2005
A guildo is a guy dildo.
TaGzOrAmAj90: matty d's is

matty d. is a guildo.
guildo by nicolaaaaaaaa August 22, 2006
a racial slur used to describe white/caucasian people. Usually used by asian and cantonese Chinese people. The literal meaning of ''Guailo'' means ''white demon''. Usually this name is used towards people named Matt, Trevor, Nathan and Will because people who hold these names are very Guailo. Other ways you can spell ''guailo'' is guilo and guailou.
Look at all the ''Guailo'' in this restaurant. ''Guailo'' can't eat chinese food.
Guailo by prikettle November 15, 2017
saying to everyone you're gonna do a shitload of things and then do nothing at all.

As Venezuelan opposition leader Juan Guaidó declared himself acting president of Venezuela had promised to fullfil a plan to stop Maduro's regime and give rise to a transition government and free elections, but since then what Venezuelans believed as a fact never happened and it seems like will never happen.
X: oh shit, the landlord just called me saying he's getting me evicted.

Y: Nah, just relax, he's just guaidoing and stuff.
Guaidoing by Zelinhotuga October 31, 2019