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Both "importan" and "importa" are forms of "importar", which is often translated as "to matter". Learn more about "importar" below.
importar()
An intransitive verb is one that does not require a direct object (e.g., The man sneezed.).
b. to be important
El costo no importa; pagaré lo que sea necesario para salvar a mi hijo.The cost isn't important; I'll pay whatever is necessary to save my son.
a. to care
Parece que ni te importa saber lo que opino.It looks like you don't even care what I think.
A transitive verb is a verb that requires a direct object (e.g., I bought a book.).
