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Japanese for 'goodbye'; however, it carries more finality. Instead of being used at the end of a day, as in "Goodbye see you tomorrow," it would be used in situations where you will either not see the person for a long time, if ever again.
Man: I'm sorry my trip is taking me overseas for an indefinate amount of time, I will call you as often as I can!

Woman: Sayonara! *tear*
by A Man Called Michael October 15, 2009
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Jul 1 Word of the Day
sending two texts in a row without a reply inbetween.
Rachel: whats up?
Tessa: not to much! hbu?
Tessa: dude, i'm so bored.
Rachel: stop double texting me.
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that one scene in Doki Doki Literature Club where Sayori commits suicide.
Person 1: "I have a word that only people who have played Doki Doki Literature Club would get."
Person 2: "Oh yeah?"
Person 1: "Sayo-nara"
by MrPaperSonic August 12, 2018
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Song created by Aries or Wunderworld on YouTube.

Also an informal way of saying goodbye to one another.
Man: Hey, have you heard Sayonara by Aries?
Woman: Yea, it's a pretty good song.
via giphy
by icarus beats August 12, 2018
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bro i gotta dip ill catch ya tomorrow.

by imtheking April 11, 2009
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a street in Citrus Heights ca where people living on that "block" think they are "Gangsta"
Don't mess with that fool, he is from Sayonara block.
by Juan Mendozafromsac June 21, 2007
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