Definition of or else
1 —used to say what will happen if something is not done You have to leave or else you will be arrested for trespassing.
2 —used to say what another possibility is He 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 is Do what I say or else!
Love words? Need even more definitions?Merriam-Webster unabridged
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