sí
adverb
· very common
1
yes
"Sí, era mi tercera siesta del día."
Yes, it was my third nap of the day.
2
indeed, definitely
"Hoy sí voy al gimnasio, seguro."
Today I really am going to the gym, for sure.
pronoun
· very commonhimself
"Lo hizo para sí mismo."
He did it for himself.
masculine noun
yes, consent
"Necesito tu sí antes del lunes."
I need your yes before Monday.