How to Say "addict of" in Spanish
The Spanish word for “addict of” is “esclavo” — B2 level. This is a very common word in everyday Spanish.
English → SpanishB2
nounB2
figurative dependency

Examples
Mi jefe es un esclavo del trabajo; nunca descansa.
My boss is a slave to work; he never rests.
Ella era esclava de la moda y compraba ropa constantemente.
She was a slave to fashion and bought clothes constantly.
Using 'de'
In this figurative sense, 'esclavo' is always followed by the word 'de' (of) to specify what the person is dominated by: 'esclavo de [something]'.
Forgetting the 'de'
Mistake: “Soy esclavo el dinero.”
Correction: Soy esclavo del dinero. (You need the connecting word 'de' (of) before the thing you are addicted to.)
Learn Spanish with Inklingo
Interactive stories, personalized learning, and more.