How to Say "slain" in Spanish
The Spanish word for “slain” is “asesinada” — B1 level. This is a very common word in everyday Spanish.

Examples
La mujer fue encontrada asesinada en su casa.
The woman was found murdered in her house.
La periodista asesinada había investigado corrupción.
The murdered journalist had investigated corruption.
Tienen una estatua en honor a la líder asesinada.
They have a statue honoring the assassinated leader.
Using 'asesinada' as an Adjective
This word is the feminine form of the past participle of 'asesinar.' It works like an adjective, so it must match the person or thing it describes: 'la víctima asesinada' (the murdered victim).
Forming the Passive Voice
You often see 'asesinada' used with the verb 'ser' (to be) to show that the action happened to the subject: 'Ella fue asesinada' (She was murdered).
Incorrect Gender Match
Mistake: “El hombre fue asesinada.”
Correction: El hombre fue asesinado. (The adjective must be masculine when describing a man.)
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