unerklärt
Unerklärt is a German adjective meaning "not explained" or "not clarified." It is used to describe facts, phenomena, or data whose causes or underlying explanations have not yet been established. In scientific reporting, journalism, medicine, and law, terms such as unerklärte Phänomene, unerklärte Ursachen, or unerklärte Symptome are common, signaling that current information does not provide a definitive explanation.
Etymology and usage: The word is formed with the prefix un- added to erklärt, the past participle
Nuances and related terms: The adjective "unerklärt" is closely related to but not always identical with "unerklärlich"
Examples: A researcher may report "unerklärte Symptome" in a patient where no diagnostic cause is found. A