Underfed 

When an organism isn't given enough derf to sustain itself; past tense

John: I forgot to feed to my dog and it was taken away because it was "underfed", what does that mean?
Sal: You didn't give it enough derf idiot, take better care of your pets.

Underfed by Capitaliism February 5, 2021

Underfed 

A person who was once a derf but is no longer.

Everyone says Eric's girlfriend underfed him. Now he wears shackets and no one steals snack chips from his manbag.

Underfed by Bowser99 January 22, 2024

underfell 

UnderFell is an Alternate Universe created by fans. The main idea of it is everyone is their cruel counterparts, and apparently only wear orange, black, and red.

UnderFell is my favourite AU!

underfell by DepressingVoice16 July 6, 2016

Underfell Papyrus 

The Edgy Angry Alternate Universe Counterpart To Papyrus. He's more popular than that cool skeleton and has all the girls, such as Akari.

Akari stopped as Underfell Papyrus loomed over her, an angry expression on his face as usual

Underfell Papyrus by Rainy Melai October 26, 2017

underffed 

A unique way to pronounce underfed if you were illiterate.

If 100 people lived on earth then 15 people would be underffed

underffed by Yeldarb Knarf February 23, 2018

unnerfed 

Comes from the online slang: "to nerf" (--> weaken a specific item, because it is or has values that led to an unbalance and had to be reduced).
Unnerfed is the opposite which means that the item is not weakened.
Example:

Soul Sword v.1.03 100 Damage
Soul Sword v.1.04 90 Damage

This item is unnerfed.

They need to nerfe this gun, it is too over powered.

unnerfed by BainDmG June 12, 2016

Underfell 

Overated

Underfell is a overrated sans au

Underfell by Whybeanstastelikepepsi? February 11, 2021