Quick answer
"Fast" is an adjective which is often translated as "rápido", and "slow" is an adjective which is often translated as "lento". Learn more about the difference between "fast" and "slow" below.
fast(
fahst
)
An adjective is a word that describes a noun (e.g. the big dog).
1. (quick)
a. rápido
We took a fast train to the airport.Tomamos un tren rápido al aeropuerto.
b. veloz
Marina got a fast car for her birthday.Marina recibió un coche veloz para su cumpleaños.
2. (ahead of time)
a. adelantado
My watch is ten minutes fast.Mi reloj va diez minutos adelantado.
3. (firm)
a. firme
The roots have to be fast in the soil.Las raíces tienen que estar firmes en el suelo.
b.
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
no direct translation
I made the boat fast to a dock cleat.Amarré el barco a una cornamuza.
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.
4. (that doesn't fade)
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.
b. que no destiñe
You can wash it. The colors are fast.Puedes lavarlo. Los colores no destiñen.
5. (promiscuous)
a. disoluto
The sailors went looking for fast girls.Los marineros salieron en busca de chicas disolutas.
6. (film)
a. rápido
You’ll need fast film to take pictures at a sporting event.Necesitarás película rápida para tomar fotos en un evento deportivo.
b. sensible
I use fast film when taking pictures in bright light.Utilizo película sensible al tomar fotos con luz brillante.
7. (sports)
a. rápido
You really have to be alert, because this is a very fast playing field.Realmente tienes que estar alerta, porque es una cancha muy rápida.
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.
c. deprisa
They went faster and faster down the hill.Se fueron colina abajo cada vez más deprisa.
9. (firmly)
a. firmemente
He tied the rope fast to the pole.Ató la soga firmemente al poste.
10. (soundly)
a. profundamente
The baby was fast asleep.El bebé estaba profundamente dormido.
A noun is a word referring to a person, animal, place, thing, feeling or idea (e.g. man, dog, house).
11. (period without eating)
a. el ayuno
(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).
She had to go on a fast before the operation.Tuvo que hacer ayuno antes de la operación.
An intransitive verb is one that does not require a direct object (e.g. The man sneezed.).
12. (to abstain from eating)
a. ayunar
Some people fast several times a year.Algunas personas ayunan varias veces al año.
Copyright © Curiosity Media Inc.
slow(
slo
)
An adjective is a word that describes a noun (e.g. the big dog).
1. (not moving fast)
a. lento
We kept a slow pace so we could enjoy the surroundings.Íbamos a paso lento para disfrutar de los alrededores.
b. despacio (adverb)
The traffic is slow on route 18.El tráfico va despacio en la ruta 18.
c. flojo
Our business is usually slow in December, so we give the employees the whole month off.Nuestro negocio generalmente está flojo en diciembre, así que les damos el mes entero libre a los empleados.
2. (losing time)
a. atrasado (watch or clock)
The clock is two minutes slow.El reloj está atrasado dos minutos.
3. (mentally sluggish)
a. torpe
Yanina's unbearably slow when she first wakes up.Yanina es insoportablemente torpe al despertarse.
b. lento
He's a bit slow. Be patient.Es un poco lento. Tenle paciencia.
c. corto
She'll never figure it out, because she's just too slow.Nunca lo entenderá porque es simplemente demasiado corta.
4. (boring)
a. lento
That movie was so slow it put me to sleep.Esa película era tan lenta que me durmió.
5. (culinary)
a. lento
Sauté the onions over a slow flame.Sofría la cebolla a fuego lento.
An adverb is a word that describes a verb, an adjective, or other adverbs (e.g. to run quickly, very tired).
6. (slowly)
a. despacio
The bus was going slower and slower.El autobús iba cada vez más despacio.
b. lentamente
Magda has been walking slow since her foot surgery.Magda ha estado caminando lentamente desde la cirugía del pie.
An intransitive verb is one that does not require a direct object (e.g. The man sneezed.).
7. (to go slower)
a. reducir la velocidad
The ship slowed near the harbor.El barco redujo la velocidad cerca del puerto.
b. aflojar el paso
The couple slowed to smell the flowers in the park.La pareja aflojó el paso para oler las flores del parque.
c. disminuir la velocidad
The truck slowed and stopped at the lights.El camión disminuyó la velocidad y paró en el semáforo.
A transitive verb is a verb that requires a direct object (e.g. I bought a book.).
8. (to make slower)
a. entorpecer
She slowed the negotiations by being unreasonable.Entorpeció las negociaciones con su actitud tan poco razonable.
b. retrasar
Soluble fiber slows the absorption of glucose.La fibra soluble retrasa la absorción de la glucosa.
Copyright © Curiosity Media Inc.
SpanishDict is the world's most popular Spanish-English dictionary, translation, and learning website.
© Curiosity Media Inc.  |  Ver en español
SOCIAL NETWORKS
APPS