Also means
attacker
Usage Note
Agresor is masculine; the feminine form is agresora. It refers to the person who initiates an attack or acts aggressively — used in legal, journalistic, and psychological contexts (el agresor fue detenido = 'the attacker was arrested'). Do not confuse with agresor as merely 'assertive person'; in Spanish the word always implies an actual act of aggression or violence.
Examples
"El agresor fue identificado por las cámaras."
Natural Translation
The attacker was identified by the cameras.

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