der Mörder
murderer
A person who has intentionally and unlawfully killed another human being.
Die Polizei konnte den Mörder nach einer langen Ermittlung überführen.
The police were able to convict the murderer after a long investigation.

murderer
Loading your saved state.
murderer
A person who has intentionally and unlawfully killed another human being.
Die Polizei konnte den Mörder nach einer langen Ermittlung überführen.
The police were able to convict the murderer after a long investigation.

'Der Mörder' (the murderer) is the person who carries out the action of the verb 'morden' (to murder). The ending '-er' is often used in German to indicate the person performing an action.
Wer mordet, wird Mörder genannt.
Someone who murders is called a murderer.
The word belongs to a word family: 'der Mord' (murder) is the act itself, and 'morden' (to murder) is the corresponding verb. If you know one word, you can often derive the others.
Der Mord geschah in der Nacht.
The murder happened during the night.
In crime novels or the news, 'Mörder' (murderer) is often combined with verbs like 'suchen' (to search for), 'jagen' (to hunt), 'fassen' (to catch), 'verhaften' (to arrest), or 'verurteilen' (to sentence/convict).
Die Polizei hat den Mörder nach wochenlanger Suche endlich gefasst.
After weeks of searching, the police finally caught the murderer.
victim / sacrifice
'das Opfer' and 'der Mörder' are on two different sides of a homicide. The victim is the person to whom something terrible has happened or who was killed. The murderer is the person who intentionally killed another human being. In reports about crimes, this contrast is important: the victim suffers the act, while the murderer commits it.

Nach langer Suche konnte der Mörder festgenommen werden.
After a long search, the murderer was arrested.
Die Polizei sucht Zeugen, weil das Opfer schwer verletzt wurde.
The police are looking for witnesses because the victim was seriously injured.