vs
QUICK ANSWER
"Si" is a form of "si", a conjunction which is often translated as "if". "Creo que sí" is a phrase which is often translated as "I think so". Learn more about the difference between "si" and "creo que sí" below.
si(
see
)A conjunction is a word that connects words, phrases, clauses, or sentences (e.g., The cat and the dog slept.).
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
creo que sí(
kreh
-
oh
keh
see
)A phrase is a group of words commonly used together (e.g., once upon a time).
1. (general)
a. I think so
¿Vas a ir al concierto esta noche? - Creo que sí.Are you going to the concert tonight? - I think so.
