ISI 

1. ISI = International Statistical Institute

2. ISI = Indian Standard Institute
which is located in Kolkata, India

3. ISI = Inter Service Intelligence,
which is the intelligence service or agency of Pakistan.

3. ISI are considered Godfathers of Taliban.

ISI by yogssg September 21, 2009

ISI 

The Directorate for Inter-Services Intelligence (more commonly known as Inter-Services Intelligence or simply by its initials ISI), is the premier Intelligence service of the Islamic Republic of Pakistan, operationally responsible for providing critical national security and intelligence assessment to the Government of Pakistan.

The ISI is a powerful and almost autonomous political and military force.

ISI by Dancing with Fire April 8, 2013

ISI 

If Seen Ignore

Out like a tramp,, isi

ISI by Jonny Jena May 24, 2018

Isi 

Is a amazing,beutiful,hot girl. Who is funny and awesome to be around.

Is usually tough and strong but may not apeer that way. She is good at some school subjects but doesnt do well in maths even though she tries hard.

She has a great sense of humour and is always supportive.

Isi your so hot

Isi by nomnomnimsisland December 23, 2011

Isi 

An Isi is usually a really pretty girl who uses her looks to get free stuff/blag.

Loved by friends and is fun to be around.

Can also be used to describe being in a good mood/happy

You're really being Isi today

Such an Isi

Isi by SDrake February 25, 2010

Isi 

Pronunciation: IH-zee.

A person who complains of massive workloads but never actually does any work; an oblivious hoverer; a harbinger of frustration. Rarely blinks. Naturally dependent on Facebook and other online social networking sites. Preys on private conversation and scandal. Immune to sarcasm and irony.

Little is known about the intellectual level of an Isi, but research is ongoing.

'If you don't get off of that facebook soon you'll turn into an Isi.'

'Oh no, I'm doing an Isi!'

'I can't be bothered to do this essay, I think I might do an Isi.'

Isi by G01 May 7, 2009

ISI 

"I'm smiling inside"

1)A word to describe the feeling of happiness/bliss that is not expressed on the outside through facial features.

2)This could also be used as a sarcastic response to a particularly crap joke or very lame anecdote. Much in the same way as lol is used these days.

1)
Dad: aren't you enjoying this holiday
Generic depressed teenage daughter: ISI

2)
annoying friend: And so today I was walking down the hall and this really fat person walked passed and farted XD

You: ISI

ISI by Jambolo February 24, 2009