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"Sin ti" is a phrase which is often translated as "without you", and "contigo" is a pronoun which is often translated as "with you". Learn more about the difference between "sin ti" and "contigo" below.
sin ti(
seen
 
tee
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. without you
Muchas gracias por tu ayuda. No sé qué habría hecho sin ti.Thanks very much for your help. I don't know what I'd have done without you.
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contigo(
kohn
-
tee
-
goh
)
A pronoun is a word that stands in for a noun (e.g., she).
pronoun
1.
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
(informal)
(with the person you're talking to; personal; second person singular)
a. with you
¿Puedo ir contigo?Can I go with you?
2.
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
(informal)
(in your possession; personal; second person singular)
a. with you
¿Tienes las llaves del carro contigo?Do you have the car keys with you?
b. on you
¿Por qué nunca llevas una bolsa contigo?Why don't you ever have a bag on you?
3.
A word or phrase used to refer to the second person informal “tú” by their conjugation or implied context (e.g., How are you?).
(informal)
(directed at you; personal; second person singular)
a. to you
Tus padres siempre fueron muy buenos contigo.Your parents have always been really good to you.
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