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"Único" is an adjective which is often translated as "only", and "lo primero" is a phrase which is often translated as "the most important thing". Learn more about the difference between "único" and "lo primero" below.
único(
oo
-
nee
-
koh
)
An adjective is a word that describes a noun (e.g., the big dog).
adjective
a. only
Nuestro único objetivo es ayudar a nuestros estudiantes a salir adelante.Our only objective is to help our students succeed.
a. unique
Thoreau fue un escritor único.Thoreau was a unique writer.
a. only
Mariela es hija única.Mariela is an only child.
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lo primero(
loh
 
pree
-
meh
-
roh
)
A phrase is a group of words commonly used together (e.g., once upon a time).
phrase
a. the most important thing
¿Qué es lo primero para ti en el mundo? - La familia.What's the most important thing in the world for you? - Family.
b. the main thing
"Lo primero es saber qué está causando la enfermedad," dijo el doctor."The main thing is to find out what's causing the disease," the doctor said.
c. first
El dinero es importante, pero la salud es lo primero.Money is important, but health comes first.
a. the first thing
Lo primero en que pienso cuando entro en la cancha es en ganar.The first thing I think about when I come into the court is winning.
a. first
Tengo varios motivos para dejar la empresa. Lo primero, el sueldo es muy bajo; lo segundo, trabajo muchas horas.I have several reasons to leave the company. First, the pay is very low. Second, I work long hours.
b. first of all
No te dejo salir de noche porque, lo primero, eres menor de edad y, lo segundo, no me gusta la gente con la que vas.I'm not letting you go out at night because, first of all, you're a minor, and second of all, I don't like the people you hang out with.
c. firstly
El trastorno bipolar hace estragos en la vida de las personas; lo primero, en la del paciente, y lo segundo, en la de los que lo rodean.Bipolar disorder wreaks havoc on people's lives; firstly, on the patient's, and secondly, on the life of those around them.
a. the former
Monté un escándalo y luego me arrepentí, lo primero en público y lo segundo en privado.I made a scene and then I regretted it, the former in public, the latter privately.
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