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Japanese word for "big sister"
"oneesan! Mom said to clean your room!"
Oneesan by KittyKinetc April 9, 2008
Related Words
Odnee • odee • odeez • odne • oneeka • oneel • Odeedee • odeeGee • odeen • Odeesia

onee-sama 

A Japanese term made of these parts:
1. The 'o-' prefix, indicating a respectful tone.
2. 'nee', meaning 'sister'.
3. The '-sama' suffix, an honorific denoting extreme respect as might be used when addressing noble figures or gods.

Onee-sama is an unusual, overly formal way of referring to one's sister. For most everyday purposes, the neutrally formal 'onee-san' or familiar 'onee-chan' would suffice: only those raised in highly formal settings would even contemplate using 'onee-sama' in a non-sarcastic way (as one might say in English 'oh of course your highness').

'Onee-sama' is a term mostly popularised by manga and anime, specifically shoujo-ai (love between young girls) series set in high-class boarding schools (see Strawberry Panic for a textbook example). Because of this association, 'onee-sama' is inextricably tied to the more elegant side of the shoujo-ai genre: a young girl using the term to address an older, unrelated girl could be hinting at a deeper relationship between the two of them. Or they could just be messing with you.
IRL (sort of): "Onee-sama, I hope you aren't labouring under the misapprehension that your seniority over me justifies you putting on airs."
Shoujo-ai fantasy: "Onee-sama, would you please become my soeur?"
onee-sama by Kazzius November 22, 2013
(Brooklyn slang) It means "Very"
Example: "her hair is odee long"

or "I'm odee tired"
Odee by Imyourfavoritedrug April 28, 2017

onee-chan 

Onee-chan is Japanese for older sister.
onee-chan by Makayo July 12, 2006
I live with 3 cats but no one ever owns a cat. They, on the other hand own me, or think they do. Therefore I am their ownee.
ownee by Ownee of 3 cats April 4, 2009
Over done. if u do somin too too much, your odeeing or u odeed.
friend one keeps saying the word hella over and over agen.
friend two: yo stop saying hella, ur odeeing now. damn!
Odee by SinisterSk8r July 5, 2009
More from Urban Dictionary
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
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