nsis 

Not sure if serious

John: "What's Nsis?"
Bruce: Not sure if serious.

nsis by Not sure if serious June 15, 2014

NSIS 

Not Sure If Sarcasm. Used when you're not clever enough to know if someone is being sarcastic or not, but you're modest enough to admit it.

A: omg you're awesome. I love u 4ever <33333
B: nsis
A: ... definitely sarcasm

NSIS by vicious vaca May 22, 2011

NSIS 

No Sky In Sight - A kick as band In Port Angeles, WA, USA

NSIS is bad ass

NSIS by J3bus2010 December 17, 2009

NSISH 

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

NSISH 

NSISH is a group of people who are made up of a variety of people, some smart, some just completely stupid (All the Admins and Mods part of NSISH are smart and the following which is not in parentheses do not apply). A great portion of them are stupid assholes who have no concept of sympathy or understanding for every one of the fucking Discord server. Though the great majority of the people who are labeled as the NSISH squad or of similar name feel they are Nutty, Scholarly, and Intellectual they are not. (The NSISH term is only true for the Admin and Mods in the server and any part of the word they want can or cannot apply to them) they are actually retarded. (All sentences using the phrase NSISH must be approved by the admin and mods who are a part of the server, hence why the sentences are given are incomplete)

The NSISH squad...
They are a NSISH group

NSISH by Not Pewds but Gloria Borger March 11, 2019