noun
worker
B1
Arbeiter: masculine noun meaning 'worker'. Used for manual or industrial workers. Definite article: der Arbeiter; plural identical in form: die Arbeiter (no umlaut). Genitive singular des Arbeiters. Often gender-specific; feminine form is Arbeiterin or gender-neutral Arbeitnehmer / Mitarbeitende in formal contexts.
Examples
Der Arbeiter repariert die Maschine.
The worker is repairing the machine.
Der Ingenieur erklärte den Arbeitern die neue Regel, weil die Maschine gefährlich war.
The engineer explained the new rule to the workers because the machine was dangerous.
Der Arbeiter auf der Baustelle trägt einen Helm.
The worker on the construction site is wearing a helmet.
Details
Mnemonics
Picture a construction worker with a hard hat and a sign 'Arbeiter' on the gate.
sounds like 'a bear' + 'ter' — imagine a worker as a strong 'bear' carrying tools
der Arbeiter — 'der' is masculine; think 'der' = 'dad' (male) to anchor masculinity
Notes
Plural 'Arbeiter' is identical to the singular in the nominative, but plural dative often adds -n (Arbeitern). Used broadly for manual or industrial workers.