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Adjective. When some when is so useless or incapable of doing anything. The person cant put on their own clothes, or just answer a question to a quiz or test or follow basic instructions. They are like almost retarded without the mental handicap. It does not have to be physical. Someone could be dumb at a subject. Or someone is lacking on a school project. Maybe they are just assholes. This term can be used for almost anything at this point. Just like fuck. Fuck can be used for anything. Keller is the new word that I hear alot of people saying.
Kenny - lily didnt do her work for the project tomorrow.
Kevin - Shes useless.
Kenny - shes so keller
Keller by Au KJTR ftw April 12, 2015
(n) simone who gets two answers right on school work and dosent give a frick about what peopl say

(v) to do something stupid
1: I’m such a Keller for failing my NHD project

2: I just ran over a person, I pulled a Keller
Keller by Kellerdude February 7, 2018
A male or female, or other that gets 20s and belows on tests or quizzes
Oh nibblets I just got another Keller.
A Very Sexy,Nice,Mature,Caring, Lover Boy That Draws The attention of almost everyone around him. He Loves Gaming but is generally shy and timid around new people that he meets Sometimes, but all in all He is the sweetest Boy ever that many want to be in a relationship with. He Is The Nicest Boy That ever walked the face of the earth. His Big Blue eyes will draw the attention of others just so they can be his girl.
My Boyfriend could be a keller.
I Love the name keller it is awesome.
Keller by 2004kid August 13, 2018
A Welsh Or Hebrew Given Name. He Is sweet and caring, He is an all-around good individual and is a bit shy and reserved when people first meet him, But in reality is the cutest and funniest dude reality has ever known, He will stick up for his friends through the roughest times and will tell opressors to kindly back off. he is generally characterized of being tall,Dark-haired,Blue eyed, Smiling, Wearing a sports cap, wearing sweatpants, and wearing a blue and black lined shirt.
I Love Keller, He is so great!!!
IKR!!! (Runs Over and kisses him)
Keller by 2004kid September 3, 2018
Keller-"Short For Kenneth"
Meaning-"Little Companion
A Keller is a guy who is Sweet,Good Looking,Intelligent, And has a great taste for music.
Geez!! Are you dating Keller??? Lucky!!!
Keller by K-dog-2004 November 13, 2018