A mumble rapper is someone who is considered a rapper, but simply mumbles words that make no sense and no-one understands.
guy 1- DUDE!! how good is Chief Keef?

guy 2-Shut the fuck up Cody, he's a mumble rapper.
by the uknown October 16, 2016
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A mumble rapper is a person considered as a rapper. They are pretty much talentless. They rap about fucking women, doing drugs, showing off their money that they really don’t deserve to earn, and they show their grills (Gold teeth) as they shoot their guns. Their so called songs ruin the generation such as relationships. and they all sound the same. They usually have tattoos on their faces. Not to mention, they mostly die in their early 20’s. You also don’t know what they’re saying. No matter how old you are, if you dislike the songs, you’ll be called a boomer. The people who listen to mumble rappers are pretty much degenerated teenagers who smoke or vape in public like in parks or schools. They either talk hood or Ebonics. They don’t know how to keep their relationships regardless of if it’s a male or female. They believe sex and smoking are everything in life.
Person1. What do you think of mumble rappers?
Person 2. Take the cock outta your mouth and speak clearly, young man. Fuck this mumba bla bla bla bla! Speak clearly and let me hear what the fuck you are saying!
by Urfluff February 9, 2020
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A term used to diss rappers that some say make incomprehensible and/or meaningless music. The term is thrown around mainly by nerds that think they know everything about music.
Person 1: You're a Mumble rapper.
Rapper: What makes me a Mumble rapper.
Person 1: I only listen to intellectual music, I hate you, and I have 5000 IQ.
by Rick Bllack July 30, 2019
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Also known as a soundcloud rapper, many go by Lil’ (name) and all end up with face tattoos.
They only rap about drugs, money (even if they don’t have it), gangs (whether or not it’s true) and use random beats found on YouTube.

They make up their own words and are hard to understand, they repeat the same lyrics throughout their songs and can be heard using the words; uh, yeah and aye a LOT.
by donttouchmeimcrying March 13, 2019
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A talentless so called rap artist who solely depends on the program auto tune to put out any music
That punk lil pump is such a a whack ass mumble rapper. I couldn't understand anything he said.
by 209sShameless October 10, 2019
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Also known as Soundcloud Rapper
A rapper that usually goes by Lil' (Name) and puts a bunch of tattoos on their face.

Only raps about things such as having sex, doing drugs, doing something in some random gang (whether or not it actually happened), or bragging about how much money that they (don't) have over some random beat they find on Youtube. Most of the time, their lyrics won't rhyme, are very difficult to understand (or not even say actual words,) or the rapper says one phrase throughout 70% of the song. They will also use the worlds Yeah, uh and aye frequently.

Examples include: Lil Peep, Lil Pump, Lil Mosey, Lil Tracy, 6ix9ine, etc.
*Gucci Gang plays on radio while driving*
Tf are these mumble rappers saying nowadays?
by Pokedex #184 October 10, 2018
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