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"Addicted" is an adjective which is often translated as "adicto", and "addict" is a noun which is often translated as "el adicto". Learn more about the difference between "addicted" and "addict" below.
A noun is a word referring to a person, animal, place, thing, feeling, or idea (e.g., man, dog, house).
a. el adicto (M), la adicta (F)
(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).
(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).
Miguel is a counselor who helps recovering addicts.Miguel es un orientador que ayuda a adictos en recuperación.
2. (colloquial) (fan)
A word or phrase that is commonly used in conversational speech (e.g., skinny, grandma).
a. el entusiasta (M), la entusiasta (F)
(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).
(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).
Juan is a comic book addict who travels to fairs and conventions.Juan es un entusiasta de los cómics que viaja a ferias y congresos.
b. el fanático (M), la fanática (F)
(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).
(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).
My girlfriend is a cooking show addict.Mi novia es una fanática de las series de cocina.
c. el adicto (M), la adicta (F)
(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).
(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).
That guy is a video game addict; he hardly ever leaves the house.Ese tipo es adicto a los videojuegos; apenas sale de la casa.
A transitive verb is a verb that requires a direct object (e.g., I bought a book.).
a. hacer adicto a 
Overprescribing opioids has addicted a large part of the population.La prescripción excesiva de opioides ha hecho adicta a una gran parte de la población.