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"yais" can't be defined conventionally. one would be less successful at defining "yais" than he/she would be at defining the contemporary english language's utility infielder, "like". "yais" is a state of mind. "yais" is understanding and misunderstanding, as well as all points described on the subsequent continuum.
you are lovely, yais; gay, yais; yais? yais; is two plus two, four? yais; (if i had the character spaces to continue, i probably wouldn't. yais.)
yais by shane April 4, 2005
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"yais" is a different way of saying "yes." From what I can tell, it's origins are from the West Virginian area. All you'll ever need to know is that it means "yes" or "yeah."
"That's coo'!"
"Yais... It sure is."
yais by AdiaxX December 18, 2004
Related Words
yais • Yaish • Yaisslyn • Yaisa • yaisabel • yaisana • yaisaya • Yaise • Yaisel • Yaiseli
how an immigrant would say "yes" , presumably while applying for a job.

made popular by the chinese guy on "mad TV"
yais by riggidy Ram One January 16, 2006
Used in the place of "yes" yay-eee-s
Expression used to acknowledge a comment that is exceedingly odd or beyond the listeners level of understanding. Also used as a way of providing an answer without actually answering anything. Often one may incorporate a pause as to create the illusion that they are actually thinking of a valid answer or comment. One may also use "yais" as a way of covering up his/her daydreaming while in a conversation. For an example of how to say "yais" properly listen to tom hanks in the movie "The Terminal".
ex. person 1("So do you think it will work?)
person 2(*clueless* "ye.....yais")

ex. person 1("Lets the bed of your truck up with jello to
attract aliens!! It would be sweet!"
person 2(*too tired to call person 1 an idiot* "Yais")

ex. person 1("We are meeting at seven oclock right?")
person 2 (*not willing to answer yes or no* "ye...yais")
yais by Benzoferrari January 12, 2006
Comical pronunciation of "yes," meant to immitate eastern Europe and Middle-Eastern accents. Used by Group X in prank calls and songs.
Good girl: Yais! Bad girl: No! I don't want her to schbraik my ween-dow.
yais by MuToiD_MaN May 18, 2006
She is a really loyal friend! You need her in your life, she’ll protect you if you have her back. She’s really pretty and crazy. Sometimes gets too serious but you’ll handle it cause you know she’ll do the best for anyone!
Yaís got mad because Janet made fun of Robert.
Omg she defended Nicole down to Earth!
Yaís by heyyyhiii October 15, 2019

No Yai Yais 

This is a playful but direct way of telling someone to stop complaining or whining
No Yai Yais please in Seattle
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