noun
perpetrator, offender
B1
Means perpetrator or offender, used mainly in legal/criminal contexts. Noun: der Täter. Plural: Täter (same form as singular; different article die Täter). Genitive singular: des Täters. Regular declension apart from plural identity. No special preposition. Common collocations: der Täter wurde verhaftet.
Examples
Der Täter wurde von der Polizei gefasst.
The perpetrator was caught by the police.
Der Täter wurde verhört.
The offender was questioned.
Die Polizei suchte nach dem Täter.
The police were searching for the perpetrator.
Details
Mnemonics
Imagine a courtroom sketch with a labeled 'Täter' to remember the criminal/perpetrator meaning.
der = male article; picture a male suspect to fix 'der Täter' in memory.
Notes
Täter is a neutral legal term for someone who committed an act (often a crime). Feminine form is 'Täterin'.