Skip to main content
Urban Dictionary Merch
Your favorite words on things you can wear, drink from, read, or give to a friend.
The Urban Dictionary Store sells gifts you’ll have to explain.

Prices in USD. Free US shipping. International shipping and regional book fees are shown before payment.

Dog eat dog 

"Dog eat dog" is analogous to the idiom "every man for himself", which implies a situation in which fierce deadly competition is necessary for your survival.

Some of these recent definitions seem to be offended at this saying due to their ignorance of the origin behind this 500 year old idiom. Some people do not seem to realize that this idiom is NOT meant to be taken literally. So, why is it called "dog eat dog" you may ask? Well, the idiom is actually a play on the much older latin idiom "dog does NOT eat dog" (canis caninam non est), which originated as early as 43 BC and first spoken by Roman scholar Marcus Tarentius Varro.

"Dog does not eat dog" is a proverbial saying indicating that even animals are better than humans in that they don’t prey on their own kind. The phrase entered into English discourse in 1543. Eventually, the phrase got flipped and applied to humans and henceforth "dog eat dog" was born. Both idioms generally imply the same thing (that humans are capable of being merciless).

So to summarize, the idiom "dog-eat-dog" is derived from its parent idiom "dog-does-not-eat-dog". The latter idiom makes sense in and of itself, while the former idiom ONLY makes sense in relation to its latter.
Me: It's a dog eat dog world out there.

Some kid: No it's not. It never was a dog eat dog world. Humans eat humans, but dogs don't eat dogs.

Me: My guy, you are so heavily misinformed. Dog eat dog isn't referring to dogs, it's referring to humans.

Some kid: So why don't they just name it "human eat human" instead?

Me: Because context my guy, it's all about context. You see... "dog eat dog" actually belongs to the much older idiom "dog does not eat dog", indicating that dogs never prey on their own kind. It took around 700 years for this idiom to become flipped and applied to humans.

Me: Also since you took it literally, I'll have you know that from an evolutionary standpoint, dogs will eat other dogs if this is what ensures their survival.

dog-eat-dog world 

description of a modern world merciless competition
- I just can't believe I lost my fortune because some dumbass invented something better and took all my clients.
- What did you expect, it's a dog-eat-dog world.

Dog eat dog 

Dogs don't usually eat other dogs. They eat other things when they're not eating dog food, but not dogs. A dog might eat a hot dog.
Guy- It's a dog eat dog world my friend.

Guy's friend- No it's not. It never was a dog eat dog world. Humans eat humans, but dogs don't eat dogs.
Dog eat dog by Solid Mantis September 2, 2019

dog eat dog 

Pretty self explanatory..
A twist on Dog fuck dog...
For those who still don't get it... Dog sex.
Sarah: Damn Jill, thats ugly dog eat dog right there

Dog eat dog 

Dogs dont eat dogs, they eat dogfood or leftovers. A wolf might eat a dog if it hasn't had a decent meal in a while.
A dog eat dog world is not a reality, humans came up with that to compare themselves to their dogs.

Dog eat dog 

"Dog eat dog" is analogous to the idiom "every man for himself", which implies a situation in which fierce deadly competition is necessary for your survival.

Some of these recent definitions seem to be offended at this saying due to their ignorance of the origin behind this 500 year old idiom. Some people do not seem to realize that this idiom is NOT meant to be taken literally. So, why is it called "dog eat dog" you may eagerly ask? Well, the idiom is actually a play on the much older latin idiom "dog does NOT eat dog" (canis caninam non est), which originated as early as 43 BC and first spoken by Roman scholar Marcus Tarentius Varro.

"Dog does not eat dog" is a proverbial saying indicating that even animals are better than humans in that they don’t prey on their own kind. The phrase entered into English discourse in 1543. Eventually, the phrase got flipped and applied to humans and henceforth "dog eat dog" was born. Both idioms generally imply the same thing (that humans are capable of being merciless).

So to summarize, the idiom "dog-eat-dog" is derived from its parent idiom "dog-does-not-eat-dog". The latter idiom makes sense in and of itself, while the former idiom ONLY makes sense in relation to its latter.

Case closed and dismissed.
Me: It's a dog eat dog world out there.
Some kid: No it's not. It never was a dog eat dog world. Humans eat humans, but dogs don't eat dogs.
Me: My guy, you are so heavily misinformed. Dog eat dog isn't referring to dogs, it's referring to humans.
Some kid: So why don't they just name it "human eat human" instead?
Me: Because context my guy, it's all about context. You see... "dog eat dog" actually belongs to the much older idiom "dog does not eat dog", indicating that dogs never prey on their own kind. It took around 700 years for this idiom to become flipped and applied to humans. And if it weren't applied to humans, well, that would completely negate the original meaning as that would imply dogs are merciless in which they aren't (most animals will back down from a fight if they lose, humans don't).
Some kid: No reply.
Me: Also since you took it literally, I'll have you know that from an evolutionary standpoint, dogs will eat other dogs if this is what ensures their survival.
More from Urban Dictionary
The phenomenon where adults salivate at children's toys
Every time I walk into the toy aisle, I catch myself kidulting over the latest action figures and LEGO sets!
kidulting by Emotional Cruiser October 12, 2025
Word of the Day on October 4, 2026
British slang for a scientist or technical expert, esp . when the speaker is not certain of the expert’s specific field of study. Not necessarily derogatory, but typically used by persons without a technical background. In the US, the equivalent would be “egghead”, “squint”, or “geek.”

Origin of the word is unknown. Started sometime in World War 2. Given the typical evolution of British slang, could easily have started because what these experts did was confusing or “baffling” to the common person.
According to the boffins downstairs, the murderer used a serrated blade.
Boffin by Agnon February 11, 2023
Word of the Day on October 3, 2026

Pee Calculus

When you have to pee in a movie but don’t want to miss anything, and must do the following mental equation: will the amount I have to pee cause enough discomfort to diminish my attention capacity for the remainder of the movie to an extent which is greater than the amount of the movie I would miss by making a mad dash to the restroom.
I saw Satantango last night, wonderful film but by the 5th hour I had to start doing pee calculus.
Pee Calculus by anorlondo October 1, 2026
Word of the Day on October 2, 2026
Literally "dirty" pronounced with a West Indian accent. Can also have a positive connotation, for example Sean Paul's album title "Dutty Rock".
"The girl is pretty but she corrupt and dutty!"

or, in a positive usage:

"Booya! That freestyle was dutty!"
Dutty by J Hall April 3, 2003
Word of the Day on October 1, 2026
korean word for madam, older woman
Ajumma wait a moment
Ajumma by aintnotinbutnice July 5, 2009
Word of the Day on September 30, 2026

Slop Grenade

When someone uses AI to generate a large document, slide deck, or piece of code/software and tosses it over the fence for you to deal with.
Chad: Hey Brent I sent you the new backend API change to review, it’s only 100 files changed.

Brent: he just tossed me a slop grenade
Slop Grenade by Joe Squid September 28, 2026
Word of the Day on September 29, 2026
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).
After we broke up, he was floxi to me.
floxi by Dr. Geek May 13, 2009
Word of the Day on September 28, 2026
Load more