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"oneesan! Mom said to clean your room!"
Oneesan by KittyKinetc April 9, 2008
Related Words

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.
"Good morning, Onee-chan"
onee-chan by Makayo July 12, 2006
being owned by someone or something
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