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adj. Meaning immensly large. Combining the words GIgantic and huMUNGUS together.
Do you see that girl's melons? They are gimungus
gimungus by Yoshiki December 10, 2004
Related Words
Very big, or large object
That’s a gimungus sword
Gimungus by Kidddd664 December 11, 2017

Gybungus 

1. Defined as anything larger than huge or gargantuan.

2. Something so big, it defies explanation, so you have to

come to UD to see if someone came up with the word.

3. One of the best ways to confuse the piss out of anyone you

know.
Your vagina isn't huge honey, it's fucking gybungus.
Gybungus by thatsnotaword March 25, 2010
Something that is so big that the words giant and humungus can't do it justice.
Her booty was GIMUNGUS!
Gimungus by Robbie Halloween April 10, 2025