Non-Monotonic Logic

A broad category of logics where adding new premises can invalidate previously drawn conclusions. This is the opposite of classical monotonic logic (if A entails B, then A+C also entails B). Non-monotonic logics include defeasible logic, default logic, and revision logic. They are essential for modeling real-world reasoning, where new evidence, exceptions, or context changes can make old conclusions false. Common examples: “Tweety flies” (default: birds fly) – but if we learn Tweety is a penguin, we retract the conclusion. Non-monotonic logic is foundational for AI, legal reasoning, and scientific method (theories are revised). A common misuse is to think non-monotonic means “anything goes”; it actually has precise formal systems. In online debates, it’s used to justify changing one’s mind: “My initial conclusion was non-monotonic; new information defeated it.”

Example: “He argued that because her previous claim was false, her current claim must be false too. She replied: ‘That’s monotonic thinking. In non-monotonic logic, a retracted premise doesn’t poison all future conclusions. People learn.’”

Non-Monotonic Logic by Dumu The Void May 27, 2026

Montoxicated 

To drink or be drunk while at work. To be intoxicated on the job.

Monti is slurring his words, he must be Montoxicated again.

Montoxicated by Montiodious May 10, 2004

Monotone Walk 

The slouched over, shuffling, defeated-by-life movement of a diabetes ridden glutton as they put in as little effort as possible to move from point A to point B.

Almost zombie-like in it’s sheer determination to never deviate from it’s original course.

‘Where’s Matt?’
‘He left his desk 20 minutes ago, I saw him heading into the toilets, I’d recognise that Monotone Walk anywhere’

Monotone Walk by CF Enterprises September 1, 2018

Monotone meat bag 

A narcissist or sociopath when their mask is cracked or they are at home, out of the public eye and not show boating their false persona. It is at these times when they are not in public view that they let down their guard, are devoid of ANY emotion and their voice becomes monotone. They are referred to as meatbags to highlight their lack of human traits. Without a conscience (super ego) and unable to experience empathy, they are incomplete people who are monotone meat bags devoid of anything human.

At the party Fred was charming, engaging and delightful to the guests.
After the party, Fred returned to his home with his family and reassumed his position of monotone meat bag. He locked himself in his bedroom with his devices after leaving the young toddlers and their bags at the door with the mother. He did not bother to grumble goodnight before tucking into a selection of pornography and video games on his ipad. He locked his door and ignored the children's bedtime routine. The charming prince at the party was only an illusion. His monotone meat bag self resurfaced the moment he was out of public view and surrounded by family in his home.

Monotone meat bag by Narcbuster April 23, 2018

monotone face 

when your face is totally devoid of emotion, usually after someone has made a lame joke

Scarlett didnt think Dads joke was funny so she showed him her monotone face

monotone face by Kittsy December 18, 2012

Lil' Monotonous 

A rapper created by Bob Costas while playing the piano for Jimmy Fallon on the Winter Olympics post-game show. Jimmy was writing his weekly thank you notes and Bob, who was playing the piano, stated that his playing was "A little monotonous." ... He is not to be confused with Lil' Wayne, Lil' Bow Wow, or Lil' Romeo.

Jimmy- Thats some nice playing Bob

Bob- Thank you... Its a little monotonous.

Jimmy- ..... By the way He's gonna be on the show next week... He's a great rapper.

Bob- oh he's gonna be on the show, along with Lil' Wayne?

Jimmy- Yep with Lil' Wayne... Lil' Monotonous

Lil' Monotonous by rhrules6 March 2, 2010

Monotonous

To be repetitive and boring

This english class is really monotonous

Monotonous by Neo-Generation November 6, 2003