Yumi Syndrome
(yuu-mi sin-dro'hm)

noun.
A neurological disorder where all of one's surroundings seem worthy of ridicule or derision; preposterous; laughable: a Chinese accent. Has been defined as a psychogenic illness distinguished by emotional incontinence or lability by the Department of Health. Characteristics of this pattern of behavior include insane laughter, tears and an exaggerated facial expression. A person experiencing Yumi Syndrome will often find it in their best interest to momentarily excuse themselves from the room or place of meeting if they feel they may experience an episode.

Origin:
2011–08; < Neo-Latin < Greek yumi syndromḗ concurrence, combination, equivalent to syn- syn- + drom-, base meaning “run” ( see -drome) + -ē feminine noun suffix

Synonyms
nonsensical, ludicrous, funny, droll, comical, farcical. See Pseudobulbar affect or the Tanganyika laughter epidemic.

Antonyms
sensible, mature, composed
"Observe how the subject is unable to contain her laughter or other displays of emotion. Hysterical neurosis is typical of stage one Yumi Syndrome."
by Very Concerned Friend August 23, 2011
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GRRRR YUMI BEST GIRL OMFG HAND IN MARRIAGE.
Sexciest person alive?? Stan her rn?? Also jungwon notice her cutie tyvm
Stan yumi / jungwon.com .
Yumi deadass simps for jungwon as a living
Rip samuel x yumi
by @chx_nhee December 23, 2020
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Yumi is a dream entity that visits people's dreams every month or week, she is the only dream entity to be not hostile towards BF so far, and is very much liked by GF for what she can do.
"Yumi The Dreame is someone who makes your dreams come true, inside of your dreams!"

"That's weird, I wanna experience that!"
by Ihavetanks2 June 10, 2021
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A new Cartoon Network show about a Japanese band called Puffy AmiYumi. It's made in America, and it doesn't portray Japan correctly. 1 yen is more than less than a dollar. AND BY THE WAY, it's Hi Hi Puffy AmiYumi. Not what puffy ami yumi like your retarded brain on drugs that aren't cool.
Wanna watch an episode of Hi Hi Puffy Ami Yumi I made in TV-14?
by Sean Ryan March 01, 2006
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Just another retarded cartoon that is exposed to kids...then parents complain about whats wrong with there kids...the show itself is EXTREMELY lame.
Did you see that episode of puffy ami yumi?
Yeah.....
They give anyone shows nowadays, huh?
Yeah....
by rdi2music December 06, 2005
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Some Weirdo Who Lives In A House With 3 Other Idiots Who Play Rainbow 6 Siege Together For Money
Who's Yumi?
Go Watch His YouTube Channel You Ass-Hat
by Xx_EmDub_xX October 15, 2019
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It's a Japanese Name and means as much as "bow archer", "bow", "beautiful" and "beautiful evening". If you're a Yumi you go girl. As a Yumi you are super cute and sexy at the same time.
Look at my outfit, isn't it super Yumi-like?

I have a new hairstyle. It's super Yumi, isn't it?
by Anime666 April 17, 2017
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