vs 

QUICK ANSWER
"Sí" is a form of "sí", an adverb which is often translated as "yes". "Cincuenta" is an adjective which is often translated as "fifty". Learn more about the difference between "sí" and "cincuenta" below.
(
see
)
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
adverb
a. yes
¿Quieres ir al cine? - Sí, pero primero hay que comer.Do you want to go to the movies? - Yes, but let's eat first.
a.
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
no direct translation
Yo sí quiero acompañarlos a Disney.I do want to go with you to Disney World.
Ella no aprobó, pero yo sí.She didn't pass, but I did.
An interjection is a short utterance that expresses emotion, hesitation, or protest (e.g., Wow!).
interjection
a. yes
¿Quieren ir mañana a la playa? -¡Sí!Do you want to go to the beach tomorrow? - Yes!
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
masculine noun
a. yes
El departamento dio el sí a la propuesta.The department said yes to the proposal.
A pronoun is a word that stands in for a noun (e.g., she).
pronoun
a. himself (third person singular masculine)
Suele jugar ajedrez con sí mismo.He usually plays chess against himself.
b. herself (third person singular feminine)
¡Se envió una carta a sí misma!She sent a letter to herself!
c. itself (third person singular)
El hilo se está enredando en sí.The string is getting tangled up in itself.
d. themselves (third person plural)
Se mienten a sí mismos.They're lying to themselves.
e. yourself (second person singular formal)
Solo desea el bien para sí.You only wish good for yourself.
f. yourselves (second person plural formal)
¡Solo tienen que creer en sí mismos!You just have to believe in yourselves!
Copyright © 2025 Dictionary Media Group, Inc.
cincuenta(
seeng
-
kwehn
-
tah
)
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. fifty
Hay más o menos cincuenta casas en el barrio.There are more or less fifty houses in the neighborhood.
b. fiftieth (ordinal)
Hoy es el cincuenta aniversario del terremoto que destruyó la ciudad.Today is the fiftieth anniversary of the earthquake that destroyed the city.
A masculine noun is used with masculine articles and adjectives (e.g., el hombre guapo, el sol amarillo).
masculine noun
a. fifty
El número escrito en la pizarra es cincuenta.The number written on the chalkboard is fifty.
a. fifties
Mis padres nacieron en los cincuenta.My parents were born in the fifties.
Copyright © 2025 Dictionary Media Group, Inc.