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1. Large; massive
2. To extend is size

Antonyms: mini
I wumbo, you, wumbo, he/she/me wumbo, wumbo, wumboing, wumbology, the study of wumbo? It's first grade, SpongeBob!
wumbo by Cezico January 27, 2020
Wumbo (wumblus-snarflia) A common name applicable to at least two known sub-species, including Snorices and Snarfles. Native origin unknown, and presently known for it's tremendous popularity in Sbasanian zoo exhibits nation-wide. A common trait amongst sub-species is the "snarf," an organ located on the upper lip, and capable of producing a "snarfle," an action of varying motions which could indicate various moods, both agressive and benevolent.
Clare, be careful! That Wumbo is snarfling at you! No, wait, it's a happy snarfle.
Wumbo by Beandiap May 21, 2020
To be fixed by an individual with great skill when others can not.

In reference to Spongebob Squarepants.
Brian: “Idon’t get how this conveyer belt is still not working, I had two of our best techs take a look at it.”
Marshal: “Give Danny a call, I’m sure he’ll wumbo this thing back to working order.”
Wumbo by ElevatedPanguitch October 5, 2020
Someone who is really dumb on a daily basis but is really funny and a great friend. Also loves food a lot.
"He's different."

"Yeah, because he's a Wumbo."
Wumbo by Spongebob!!! December 5, 2020
This is a home made term that refers to your favorite member in a Kpop group that you love with all your heart.
Kpop fan 1: Hey so like remember when we were talking about your wumbo being chan and changbin?

Kpop fan 2: omg yeah i cant choose i love them both!

Kpop fan 1: well guess what... i think Han is my wumbo!
Wumbo by _Han_ February 3, 2021
When two homosexuals have sex, switching dom and sub positions throughout.
Didn't you hear that they were doing the wumbo all night long?
Wumbo by StylishSymphony March 6, 2021