pesarás
-you will weigh
The word pesarás is the future form of pesar in the second person singular. There are other translations for this conjugation.
See the full pesar conjugation

pesar

En un mes pesarás mucho.
A month later you will be very heavy.
Es como si no pesaras nada y el tiempo se detuviera.
It's like you were weightless and time stands still.
Quizás no quiso que pesaras mal de ella.
Maybe she didn't want you to think the less of her.
Si pesaras diez libras menos te lo haría ahora mismo.
If you have ten pounds, I would do it by now!
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