Quick answer
"First" is an adjective which is often translated as "primero", and "first of all" is a phrase which is often translated as "en primer lugar". Learn more about the difference between "first" and "first of all" below.
first(
fuhrst
)
An adjective is a word that describes a noun (e.g. the big dog).
1. (ordinal number)
a. primero
The first time I ever had guacamole was in Guadalajara.La primera vez que probé el guacamole fue en Guadalajara.
b. primer (before noun)
The first chapter of the novel was the best.El primer capítulo de la novela fue el mejor.
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g. to run quickly, very tired).
2. (ahead of others)
a. primero
I had to speak first in the meeting.Tuve que hablar primero en la reunión.
3. (before anything else)
a. primero
First, I would like to thank the organizers for inviting me.Primero me gustaría agradecer a los organizadores por haberme invitado.
4. (rather)
a. antes
You want me to give up my rights? I'd quit first.¿Quiere que renuncie a mis derechos? Antes renuncio.
A noun is a word referring to a person, animal, place, thing, feeling or idea (e.g. man, dog, house).
5. (in dates)
a. el primero
(m) means that a noun is masculine. Spanish nouns have a gender, which is either feminine (like la mujer or la luna) or masculine (like el hombre or el sol).
The first of April is a day for pranks and jokes of all kinds.El primero de abril es un día para bromas y chistes de todo tipo.
6. (car gear)
a. la primera
(f) means that a noun is feminine. Spanish nouns have a gender, which is either feminine (like la mujer or la luna) or masculine (like el hombre or el sol).
We had to go up the slope in first.Tuvimos que subir la cuesta en primera.
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first of all(
fuhrst
 
uhv
 
al
)
A phrase is a group of words commonly used together (e.g once upon a time).
phrase
1. (most importantly)
a. en primer lugar
I have a few suggestions for you. First of all, make sure you have a solid thesis before you try to write a paper.Tengo algunas sugerencias para ti. En primer lugar, asegúrate de que tu tesis es sólida antes de empezar a componer tu ensayo.
b. ante todo
First of all, you should know that just because you're rich doesn't mean you'll be happy.Ante todo, debes saber que ser rico no singifica que serás feliz.
c. antes que nada
First of all, remember that we love you.Antes que nada, recuerda que te amamos.
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