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A substance that grows brain cells in the hippocampus and effectively treats depression. It also makes you smarter. The best doses are 40mg to 80mg daily for a few weeks. Benefits last far beyond the final dose taken. It's a cognitive enhancer.
I treated my depression with NSI-189. Now I am much less depressed, and smarter.
NSI-189 by HawaiianPunch1 April 29, 2020
Related Words
Nsi nsidiou nsikan nsimeko NSISH NSI-189 nsia nsic nsidb Nsider2
An offensive curse term of Igbo origin which means "Eat Shit" and is used to show strong disagreement or disgust of an opinion from an individual or group.
"According to guys who reside in New York, Heineken tastes better than Life Beer"

"Tell those New Yorkers to Rie nsị"
Rie nsị by Onye Life January 22, 2020
nsidb stands for not sure if done before.
When someone makes a meme and post it online but he/she doesn't know if it's been already made by someone else so he/she adds a #nsidb in the caption.
This meme is made by me #nsidb
<Original-Meme-Image-Here>
nsidb by ShaggyDishu June 2, 2019
A person who jews out of events because his/her cost-benefit analysis did not yield satisfactory results.
We were going to check out the cool new bar but Nick was an nsinger and backed out at the last minute because the drinks were too expensive.
NSinger by TerriShaiv April 21, 2014
NSISH, which stands for Nutty Scholarly Intellectual Study Hall, is a collection of highly intelligent EPIC GAMERS who wish to have a place to cultivate their knowledge. Often paired with "uwu®", it is an extremely selective institution which takes a holistic approach to its admissions. However, it currently faces controversy over the necessary qualifications, some of which involve race.
All the kids from NSISH got 50s on the Bio test. What GODS.
NSISH by gnagzs December 2, 2018
very beautiful and has a great sense of humor, every time she comes in a room every one smiles. She can be a great friend and also a loyal girlfriend this person is most likely african
omg that girl so pretty she reminds me of nsikan
nsikan by geogrey May 7, 2018