warner
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warner
A person who warns others about an imminent danger, a risk, or a negative development.
Die Warner vor den Folgen des Klimawandels wurden lange Zeit nicht ernst genommen.
Those warning about the consequences of climate change were not taken seriously for a long time.
The word 'Warner' (warner) is derived directly from the verb 'warnen' (to warn). The ending '-er' here refers to a person who performs the action of the verb — in other words, someone who warns.
Er ist ein bekannter Warner vor den Gefahren der künstlichen Intelligenz.
He is a well-known warner of the dangers of artificial intelligence.
A 'Warner' (warner) always warns 'vor' (about/against) something. The preposition 'vor' is followed by the dative. This is how the danger or risk is named.
Die Warner vor der Finanzkrise wurden damals belächelt.
Those who warned about the financial crisis were ridiculed at the time.
The expression 'ein Rufer (oder Warner) in der Wüste sein' (to be a voice crying in the wilderness) describes a person whose warnings and admonitions are not heard or are ignored by the general public.
Mit seinen Appellen für mehr Umweltschutz fühlte er sich oft wie ein Warner in der Wüste.
With his appeals for more environmental protection, he often felt like a voice crying in the wilderness.