Nossible Posted in N Best definition Nossible Nossible: Not-PossibleA short noob slang for impossible Idiot01: “Yo when i jump off this roof and flap i’ll prolly fly” SensibleNub1: “You’re an idiot. Nossible.” How satisfied are you with the definition? Looking for Nossible meaning? Delighted that you discovered the greatest determine on our web site! Recently this definition was actually observed 2 times.