decidiréis
-you will decide
The word decidiréis is the future form of decidir in the second person plural.
See the full decidir conjugation

decidir

Eso lo decidiréis tú y tu esposa.
That's for you and your wife to decide.
Así que tengo la letra aquí que hemos partido en 14 partes, así que vosotros decidiréis entre vosotros mismos, quien tiene qué parte.
So I have lyric sheets here that we've broken down to 14 parts, so you guys are gonna have to decide amongst yourselves, who gets what part.
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