Someone who plays the block game known as "minecraft". Most people who get the nickname Malfas are named this way because they are usually nerds who play UHC Champions on the hypixel network.

People are also named this way if they are absolute cunts who suck dick all day.
by Wistaf February 12, 2018
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A female cheif.
The woman in charge in the relationship.

The chief
Justin: Nicole is the Malfa!
by Gemini19833 August 5, 2021
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The woman “chief” in the relationship

The woman in charge
Justin: Nicole is the Malfa
by Gemini19833 August 6, 2021
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