Sonrías
Sonrías is the second-person singular subjunctive form of the Spanish verb sonreír, which translates to "to smile" in English. The subjunctive mood is used in Spanish to express a range of nuances, including desire, doubt, emotion, possibility, and necessity. Therefore, "sonrías" would be used in a sentence where the speaker is addressing a single person (you, informal) and expressing one of these non-indicative concepts related to their smiling.
For instance, a sentence like "Espero que sonrías" translates to "I hope that you smile." Here, "sonrías"