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.
by Capitaliism February 5, 2021
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A unique way to pronounce underfed if you were illiterate.
If 100 people lived on earth then 15 people would be underffed
by Yeldarb Knarf February 23, 2018
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1)To lose every game, meet, or event in a long sports season.

2)To perform especially poorly in several events of a single competition, such as finishing in last place in multiple track events at a single meet.
1)The 2017 Cleveland Browns wemt underfeated at 0-16.

2)Jimmy finished in last place in the 200m, 400m, and 1600m races at the State Championship Meet.
by BigHurt35 December 20, 2020
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