noun
danger, hazard, risk
B1
'Gefahr' means 'danger', 'hazard', or 'risk'. Feminine noun (die Gefahr; plural Gefahren). Used for threats, hazards or risky situations. Regular plural formation. Often used with the preposition 'in' in set phrases (in Gefahr sein/geraten). Common in warnings and safety contexts.
Examples
Chemikalien stellen eine Gefahr für die Umwelt dar.
Chemicals pose a hazard to the environment.
Das ist eine Gefahr.
That is a danger.
Vorsicht, Gefahr!
Caution, danger!
Details
Mnemonics
a bright warning triangle with the word 'Gefahr' inside
guh-FAHR — think 'go far' (if you go too far it can be dangerous)
die Gefahr — remember 'die' (feminine); think 'die' as in deadly/danger to recall feminine
Notes
Common collocations: 'Gefahr bestehen', 'in Gefahr sein', 'Gefahr laufen'. Feminine noun; plural is 'Gefahren'.