Definition of or else
1 —used to say what will happen if something is not doneYou have to leave or else you will be arrested for trespassing.
2 —used to say what another possibility isHe either thinks he can't do it or else he just isn't interested.
3 informal —used in angry speech to express a threat without saying exactly what the threat isDo what I say or else!
Love words? Need even more definitions?Merriam-Webster unabridged
Words at Play
Ask the Editors