This is the 25th most frequent Spanish word.
si
"Si" in Spanish means "if" or "yes," depending on context.
Here, 'si' functions as an interrogative conjunction meaning 'if', used to introduce an indirect question.
Ella me preguntó si quería participar.
She asked me if I wanted to participate.
In this context, 'sí' is an adverb meaning 'yes', used to affirmatively respond to a question or confirm a statement.
Sí, estaré allí a tiempo.
Yes, I will be there on time.
In this sentence, 'si' is used as a conditional conjunction meaning 'if', introducing a condition for the result to occur.