How to Say "either... or..." in Spanish
The Spanish word for “either... or...” is “o” — A2 level.
English → SpanishA2
ConjunctionA2
presenting a mutually exclusive choice

Examples
O vienes conmigo o te quedas en casa.
Either you come with me or you stay at home.
O lo haces ahora o no lo haces nunca.
Either you do it now or you never do it.
Para el postre, o pides flan o pides helado.
For dessert, you either order flan or you order ice cream.
Emphasizing a Choice
Using 'o' at the beginning of the sentence and again between the choices adds extra emphasis. It makes it clear that only one of the options is possible.
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