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"Pesado" is a form of "pesado", an adjective which is often translated as "heavy". "A" is a preposition which is often translated as "to". Learn more about the difference between "a" and "pesado" below.
a, la a(
ah
)A preposition is a word that indicates the relationship between a noun and another word (e.g., He ran through the door.).
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
Podía respirar a duras penas.He was hardly able to breathe.
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
¡A fregar los platos!Go do the dishes!
¡A la cama!Off to bed!
a. no direct translation
This refers to an idiomatic word or phrase for which there is no word-for-word translation.
Me encantaría ganar dinero a espuertas.I would love to earn lots of money.
Llovía a cántaros.It was pouring.
A feminine noun is almost always used with feminine articles and adjectives (e.g., la mujer bonita, la luna llena).
An abbreviation is the shortened form of a word or group of words (e.g., "UFO" = "unidentified flying object"; "p." = "page").
a. A
El circuito transporta una corriente de 1 A.The circuit carries a current of 1 A.
La intensidad de la corriente eléctrica se mide en A.The intensity of an electric current is measured in A.
pesado(
peh
-
sah
-
doh
)An adjective is a word that describes a noun (e.g., the big dog).
a. heavy
No es bueno dormirse directamente después de una cena pesada.Going to sleep straight after a heavy meal isn't good for you.
3. (intense)
a. deep
Me desperté de un sueño pesado con dolor de cabeza.I woke up from a deep sleep with a headache.
4. (colloquial) (irritating)
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
c. pain (colloquial) (noun)
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
¡Pero qué pesado eres!You're such a pain!
5. (dull)
a. heavy
El pronóstico da nevadas pesadas para este martes.Heavy snowfall is forecast for this Tuesday.
This means that the noun can be masculine or feminine, depending on the gender of the noun it refers to (e.g., el doctor, la doctora).
7. (colloquial) (annoying person)
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
a. pain (colloquial)
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
Mi hermana pequeña es una pesada.My little sister is a pain.