fast
gb/fˈæst/ us/fˈæst/
A1
Inglés
~ 1800
Acepciones
0 acepciones
adjective
A1
property
1
Moving quickly
Moving very quickly.
Patrón de uso:
[something] is fast
Error frecuente:
Learners sometimes confuse 'fast' and 'quickly'; 'fast' is often used after 'be' verbs, while 'quickly' is an adverb modifying actions.
Sinónimos
quick (Slightly more general; can refer to actions or processes, not just movement speed.)
Antónimos
slow (Describes low speed or lack of quickness.)
Colocaciones
fast car
|fast train
|fast runner
|fast pace
Temas
daily life
|transport
|sports
|core_vocabulary
|travel
|transportation
Ejemplos
- The cheetah is the fastest land animal.
- She drives a very fast car.
- This computer is fast compared to my old one.
Ejemplos para estudiantes
- The bus is fast.
- He runs fast.
- This phone is fast.
adverb
A1
property
2
At a high speed
Quickly or with high speed.
Patrón de uso:
[someone] runs fast
Error frecuente:
Learners may incorrectly say 'fastly'; the correct form is 'fast'.
Sinónimos
quickly (More general in use; 'fast' is less formal and often used in speech.)
Antónimos
slowly (Describes doing something at a low speed.)
Colocaciones
run fast
|drive fast
|move fast
Temas
daily life
|sports
|core_vocabulary
Ejemplos
- He runs surprisingly fast for his age.
- The train was moving too fast to stop in time.
- She talks fast when she’s nervous.
Ejemplos para estudiantes
- He runs fast.
- The car moves fast.
- She speaks fast.
adjective
B1
property
3
Firmly fixed, secure
Held tightly and not able to move.
Patrón de uso:
[something] is fast [somewhere]
Sinónimos
secure (Emphasizes safety or protection rather than immovability.)
Antónimos
loose (Not firmly fixed or attached.)
Colocaciones
hold fast
|stuck fast
|fast asleep
Temas
construction
|daily life
|core_vocabulary
Ejemplos
- The boat was held fast by the rope.
- The lid was stuck fast and wouldn’t open.
- He held her arm fast.
Ejemplos para estudiantes
- The rope holds the boat fast.
- The lid is stuck fast.
- He holds my hand fast.
Verbo
B1
action
4
Go without food for a time
To not eat for some time, often for religion or health.
Patrón de uso:
to fast for [time period]
Sinónimos
abstain from eating (More formal and explicit description of the action.)
Antónimos
feast (To eat a lot, often in celebration.)
Colocaciones
fast during Ramadan
|fast for 24 hours
Temas
religion
|health
|food_drink
Ejemplos
- Muslims fast from dawn to sunset during Ramadan.
- Some people fast once a week for health benefits.
- He decided to fast for two days before the operation.
Ejemplos para estudiantes
- I fast during Ramadan.
- She will fast for one day.
- They fast for health.
Sustantivo
B1
event
5
A period of not eating food
A time when you do not eat food for religion or health.
Sinónimos
abstinence from food (Formal phrase, used in medical or religious contexts.)
Antónimos
feast (An event with abundant eating.)
Colocaciones
religious fast
|go on a fast
Temas
religion
|health
|food_drink
Ejemplos
- They went on a three-day fast before the ceremony.
- The doctor recommended a short fast before the test.
- Breaking the fast is an important tradition.
Ejemplos para estudiantes
- He went on a fast.
- The fast lasts two days.
- We break the fast at night.
Gramática
Forma de diccionario
fast
AFI
GB/fˈæst/
US/fˈæst/
Sílabas y acento
fast (1 sílaba)
Stress on 1st syllable (fast)
Formas de la palabra
Adjective
- Base: fast
- Comparative: faster
- Superlative: fastest
Noun
- Base: fast
- Plural: fast, fasts
Verb
- Base: fast
- 3rd Person Singular: fasts
- Present Participle: fasting
- Past: fasted
Familia de palabras
Expresiones
hold fast
1/hˈoʊld fˈæst/
fixed phrase
Keep a firm grip on something
To keep holding something tightly and not let go.
Ejemplos
- Hold fast to the railing when climbing the stairs.
- He held fast to his beliefs despite criticism.
play fast and loose
1/plˈeɪ fˈæst ˈænd lˈus/
idiom
informal
Act carelessly or dishonestly
To behave without care or honesty, especially with rules or promises.
Ejemplos
- The company played fast and loose with safety regulations.
- You can't play fast and loose with people's trust.
fast asleep
1/fˈæst əslˈip/
fixed phrase
sleeping very deeply
Sleeping very deeply and peacefully.
Ejemplos
- By 10 p.m., the children were fast asleep.
- She looked so peaceful, fast asleep under the blanket.
fast asleep
2/fˈæst əslˈip/
fixed phrase
In deep sleep
Sleeping very deeply.
Ejemplos
- She was already fast asleep when I came home.
- The baby is fast asleep in his crib.