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An entity that cats can see but humans can't. Cats are driven insane by them and must destroy them. Whenever you see a cat attack nothing with an insane fury, it's probably a greeble
Look at Mittens chase that greeble!
Greeble by ISeenAGreeble August 23, 2022
Related Words

greeblies 

In the Lego online community, greeblies are the intricate details on the sides of spaceships and sci-fi MOCs that define the mechanics and workings of what the MOC is meant to be. They were famously used in the giant Star Destroyer Lego set a few years ago, and also in the more recent Death Star II set. Plates with rails are often used for greeblies because they have a protrusion that only sticks out half a stud without needing a jumper plate. (source: Brickspace.org)
Hey, that Star Destroyer has great Greeblies.
greeblies by 'John February 15, 2009
Random bumps, extrusions, and hills and valleys, usually planar. Used in 3D modeling and animation to add interesting detail, like that on the surface of the DeathStar.
"Yo dog, that greeble modifier really pimped out your 3D model."
greeble by Matthew Highison December 28, 2005

Greebler 

"Greebler" is a word that can be used to describe anything that is great.

Traditionally, it meant something else entirely, something disgusting. However, in modern day English, a greebler is an object of awe.
- Damn!!! That girl is fineeeee,
- Yeah bro, she's a greebler fo sho

- Dynamics grades are up, I got a A+ on the test!!!
- Awesome dude! You are such a greebler.

- Did you hear what happened to gray?
- Yeah man, he lost a game of soggy biscut
- He ain't no greebler
Greebler by Greebly McGreebs November 2, 2011

The greebler 

typically used to refer to a certain tf2 (washed) Rocket jumper Newjuls, when he be greebling and shit and making funny sounds
Being defined by : "Damn bro hes on his greebler goblin grind again"

Newjuls : "I'm the greebler" *proceeds to cackle*
referring to Newjuls doing average greebler shit
The greebler by RockSolidWood June 4, 2023

greeblin 

Greeblin - Often considered skrunkly; a creature or person who resembles a traditional portrayal of a gremlin, but who is fixated on doing a seemingly pointless tasks or fulfilling an eccentric desire via often greedy acquisition.

Often paired with the verb to greeble, meaning to act silly and fulfill eccentric desires.
Dave: Did you see my cat greebling last night? He sucked on Cindy's finger for over 20 minutes with the weirdest look on his face.
Walter: Wow, what an absolute greeblin.
greeblin by hazie wazie May 21, 2023
More from Urban Dictionary

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
NYC people who migrate north to Quahog, RI to see the leaves in the fall.
New York and everyone from there can fornicate themselves with an iron stick.
leafers by ss++ February 8, 2005
Word of the Day on September 27, 2026

Respectfully 

Precedes or follows either a gratuitously disrespectful or honest remark, originated in New York City. Used in similar fashion to "no offense" or "to be honest," interchangeably.
Ya mans is wild buns, respectfully. Respectfully he's washed.

After school, The Modells on Jamaica Ave was active. Respectfully.
Respectfully by john quan the first December 20, 2020
Word of the Day on September 26, 2026

You met me at a very Chinese time in my life

A moment in time where you feel distinctly Chinese over all other things.
Dante: "I wish I could be Nigerian, but I can't because I'm Chinese. You met me at a very Chinese time in my life."
Word of the Day on September 25, 2026
Adjective. Used to describe persons who have adjusted or altered their lifestyle for environmental reasons. Crunchy persons tend to be politically strongly left-leaning and may be additionally but not exclusively categorized as vegetarians, vegans, eco-tarians, conservationists, environmentalists, neo-hippies, tree huggers, nature enthusiasts, etc.

Also used to describe establishments where alternative foods and products are sold, i.e. natural food stores.

Modified derivative of granola.
"I need more crunchy guys in my life. I'm so tired of dating preppy metrosexual assholes."

"I'm heading out to the crunchy store to pick up some fair trade chocolate and tea tree oil, do you need anything?"
crunchy by EBC July 11, 2007
Word of the Day on September 24, 2026
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