a fat girl who is a total poser & copies her enemies and a fucking spoiled brat (panini)
ashley : you see that new girl in science class ?

jessica : yeah people say shes a "nini"
by OmgImSoFabulous June 3, 2009
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In certain contexts, pronounced "nigh-nigh,) short for "night-night" or something similar. Often a replacement for "goodnight."
"early shift tomorrow, 6 AM.... guess I should go to sleep"

"okay! nini, sleep well!"
by PunkBronyGrace December 23, 2021
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is a sweet,loyal,beautiful,wordy,real and valuable person!

Dam i wish i had a girlfriend/best friend like her.
dam! i wish i had a best friend/girlfriend like #nini
by #nini September 22, 2014
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Slang in Mexico for a young person that 'ni estudia, ni trabaja' ... in other words, someone that doesn't study, and doesn't work. Just sorta bums around all day, and lives off their parents' money.
Ese nini no hace nada, solo pasa todo su dia en la playa.

That nini doesn't do anything, he just spends all day at the beach.
by hibore222 April 23, 2011
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An angel.

Masyallahhhhhh, I bet ur imaan/sense will drop after hearing this beautiful name or seeing her face. (Ninie)
" Hey gurl, you look beautiful. But u will never be stunning as Ninie. "

And for guys, be prepared to get slapped by your girlfriend/wife.
by Ninie's friend. December 27, 2016
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Nini derives from 'night, night' when saying goodbye to someone online. First used in 2002 by my cousin Sam.
"hey boo, gotta go. nini"
by serena January 9, 2005
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when you feel sleepy and don't have the energy to say 'I'm sleepy'
mujhe NINI aa rahi hai
by coolkidroundtheblock69 February 18, 2022
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