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"Fast" is an adjective which is often translated as "rápido", and "soon" is an adverb which is often translated as "pronto". Learn more about the difference between "fast" and "soon" below.
fast(
fahst
)An adjective is a word that describes a noun (e.g., the big dog).
1. (quick)
3. (firm)
b. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
I made the boat fast to a dock cleat.Amarré el barco a una cornamusa.
She jumped down from her horse, and tied the rope fast to a tree.Saltó de su caballo, y ató bien la cuerda a un árbol.
a. inalterable
You can use bleach when washing this sweatshirt, because the color is fast.Se puede usar blanqueador al lavar esta sudadera, porque el color es inalterable.
a. disoluto
The sailors went looking for fast girls.Los marineros salieron en busca de chicas disolutas.
6. (film)
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
8. (quickly)
a. rápidamente
They moved really fast, so we weren't able to follow them.Se movieron muy rápidamente, así que no los pudimos seguir.
b. rápido
It happened so fast that I hardly remember it.Sucedió tan rápido que apenas lo puedo recordar.
9. (firmly)
10. (soundly)
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
An intransitive verb is one that does not require a direct object (e.g., The man sneezed.).
soon(
sun
)An adverb is a word that describes a verb, an adjective, or other adverbs (e.g., to run quickly, very tired).
b. dentro de poco
Set the table; dinner will be ready soon.Pon la mesa, la cena estará lista dentro de poco.