This is the 11461st most frequent Spanish word.
existan
"Existan" is the subjunctive form of "existir," meaning "they exist" or "there are."
Used in a subjunctive form to indicate necessity or importance.
Es importante que existan regulaciones estrictas para proteger el medio ambiente.
It is important that there exist strict regulations to protect the environment.
Expresses uncertainty, hence the subjunctive form is used.
Dudo que existan pruebas concretas sobre esa afirmación.
I doubt that there are concrete proofs about that claim.
Used in the indicative form to state a fact or observation.