In linear algebra, an n-by-n square matrix A is called invertible (also nonsingular or nondegenerate) if there exists an n-by-n square matrix B such that:

AB = BA = I (where I is the Identity Matrix).

Otherwise, in life, it refers to the case where something can be transformed into something else and transformed back.

Randy: Sally is so invertible; real marriage material.

Sandy: I know, nonsingularly so. Put a few drinks in her and you can get her on her back and yet in the morning she still gets up and cooks you breakfast.

Invertible by Len Bakerloo July 6, 2016

join the choir invisibule

To die. Derived from Monty Python's immortal Dead Parrot Sketch.

Example for "join the choir invisibule": "'E's rung down the curtain and joined the bleedin' choir invisibule!"

join the choir invisibule by zh84 October 18, 2006

Investicles

Having the balls to put all your money into an investment that will either make you rich or make you bankrupt.

I cant believe Keith put his life savings into that potato-sculpture company! The man must have investicles the size of coconuts!

Investicles by jeffrjohn February 13, 2007

Investicles

What someone has when they make risky investments.

Bob is a dick on the golf course, but he's got real investicles.

Investicles by Shawarma123456765432 January 28, 2010

Investicles

Having the guts or balls to put all of your money in one or a few investments knowing you will either lose it all or get paid

That student who put most of his money in Ford must have serious investicles.

Everyone thought I was an idiot for putting most of my money in Ford but I had good information, insight, and investicles to make the move. I got paid for putting most of my money in Ford.

Investicles by HighNetWorth April 6, 2010

murderhobo

In a tabletop game, a murderhobo is a player who murders NPCs indiscriminately. This is normally derogatory, referring to a player who totally ignores quests, dialog, backstory, trade, world building etc.

The term is most common with Dungeons and Dragons, but it can be applied to most RPGs where the player is allowed to kill most quest-giving NPCs and NPC traders. E.g. Elder Scrolls, Fallout, Divinity original sin.

DM: The sad little orphan girl tugs at Steve's trenchcoat to get his attention, and ask for help saving her pet dog from...
Steve: I'd like to roll a strength check against strangling the orphan.
Dave: I call dibs on the dog.
DM: You murderhobos disgust me.

murderhobo by Loup&S September 9, 2021

Word of the Day on September 22, 2026

Whale

In sales terms, a whale is a prospect that is significantly larger than an organization’s average customer.

Whales are large and extremely difficult to close. Due to their immense size, they are highly sought-after.

A whale is typically identified at first by a whale hunter on the sales team, but often requires cross-discipline participation in order to close; this includes assistance from operations, engineering, creative, client success, and business development teams.

"Shit...the sales director chewed me out on the sales call this morning. He's totally pissed that I have nothing in my pipeline. I've been focused on this one whale for so long that I haven't had time to prospect for normal-sized deals."

Whale by FQ_GFY February 3, 2020

Word of the Day on September 21, 2026

Concrete cowboy

A guy who thinks he's a country kinda guy, but in reality lives a comfortable city / suburban life.

Eugene: Look at that dude in the cowboy hat!
Todd: He's just a concrete cowboy.

Concrete cowboy by EugeneJohnson42000 March 16, 2024

Word of the Day on September 20, 2026

hobo loko

any hard liquor that is cheap & potent.. eg. relska, popov, potters, evan williams, kamchatka, fireball, rumpleminze, southern comfort, everclear

hey let's get a drink of that?

go ahead
*takes drink* ugh wtf is that?

everclear & bepsi
fucking hobo loko eeessshh

hobo loko by d i z k o 2 0 8 September 14, 2026

Word of the Day on September 19, 2026

God Shot

A chance happening with profound meaning, an unexpected blessing, a "sign".

Dr. Drew on Celebrity Rehab said "All of a sudden what had been just another Hollywood proposal became for him an unexpected blessing, an opportunity for growth. In drug recovery language, that's called a "God shot."

God Shot by Imogen1564 February 25, 2011

Word of the Day on September 18, 2026

city chicken

A food native to Pittsburgh/Western Pennsylvania in which cubes of pork and/or veal are put on a short, wooden skewer, breaded, then baked and/or fried.

I've heard that city chicken originated during the Great Depression, when folks didn't have enough money to buy full cuts of meat, so they assembled meat scraps on a wooden skewer, creating a make-shift drumstick. Hence the name.

Are yinz havin' city chicken for dinner?

city chicken by TRF August 31, 2006

Word of the Day on September 17, 2026