How to Say "unlikely" in Spanish
The Spanish word for “unlikely” is “remoto” — B2 level.
English → SpanishB2
AdjectiveB2formal
possibility

Examples
Existe una posibilidad remota de que cambie de opinión.
There is a remote possibility that he will change his mind.
No veo ni la más remota conexión entre esos dos temas.
I don't see even the slightest connection between those two topics.
Possibility
This sense is almost always used with feminine nouns like 'posibilidad' (possibility) or 'duda' (doubt), requiring the feminine form 'remota'.
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