life subtractor 

The name of a venomous snake scientists had in mind before they finally settled on Death Adder.

Scientist #1: Call be stupid, but Life Subtractor just seems too obvious a name for a venomous snake.
Scientist #2: How about… Death Adder?
Scientist #1: Brilliant!

life subtractor by eastcoastninja May 21, 2016

Addition by subtraction 

When one person in the group leaves and the group as a whole becomes better

Kyle- "Finally Jimmy left"
Leo- "Jimmy was so ugly and drunk. Now all the ladies will come to us"
Steve- "Yeah, it's definitely addition by subtraction"

Addition by subtraction by Skeet Master Steve June 21, 2009

subtractor 

An individual that makes a situation horrible, someone who cannot possibly help out, a negative luckless person, a minus of life.

Someone who either directly or indirectly kills and maims people, a person that is a general menace of calamitous mishap.

"There's no way we're bringing a subtractor with us; tell Capt. Buzzkill he can stay home and destroy his own life."

"If there is some way we can get them to hire a subtractor, their campaign will be doomed."

History of this definition:
I wrote an article in response to news about doctors stabbing infants with vaccine needles and the infants would soon die. Included was a simple formula to explain the logic of this problem where I referred to the doctor as like a “subtractor” because they minus life either directly or indirectly, and intentionally or haplessly. I decided to define a “subtractor” further to include individuals that people don’t want around because they bring misfortune, screw up lives and are generally useless in a crisis.

subtractor by Gama Xul February 14, 2012

Subtracterall 

Adderall XR capsules that have been disassembled and reassembled to take some of the medicated beads out so the prescription holder can sell some of his pills whilst keeping his medication.

"Yeah bruh, I've been broke as fuck all through finals, so I've been hawking Subtracterall all around the dorm, keep that quiet Adrien Bro-ski!".

Subtracterall by AcidHead Brown May 19, 2014

Subtractitall

What Adderall starts to do after you get a little too into it. It subtracts weight, money, time, sleep, patience, body temperature, and attention span. It "subtracts it all."

Prescribing doctor: I'm going to prescribe you Adderall, to help you focus and give you more energy to complete your tasks.

Patient: Thanks, doc. Anything I need to know?

Doctor: Yes. If you abuse it, it'll take everything away from you that makes you human. It'll give your skin the cold, slick sheen of a lizard, and your mind the attention span of a grasshopper. You'll forget about your friends, food, showers, why you even asked for this in the first place.
You'll be tore up from the floor up. You'll need a check up from the neck up. You'll go from Adderall... to Subtractitall.

Patient: *already stuffing script in his pocket, walking out the door: Ah, gotcha. Later, doc!

Subtractitall by almos_def August 15, 2011

subtracting an F 

When you subtract an F,he goes from being your Best Friend Forever to being your BoyFriend.

BFF-F=BF

I've been thinking about subtracting an F with eddie for a long time, but I don't want to ruin our friendship.

subtracting an F by Coralynn June 4, 2007

Subtractificate 

Subtraction, slang.

Ms.Crathern,
Do I subtractificate 36 from 10?

Subtractificate by credz to john t and jesse c November 1, 2008