obscure origin

Examples (10)

• The ancient artifact's obscure origin puzzled archaeologists.
• Researchers tried to uncover the obscure origin of the mysterious illness.
• The word's obscure origin makes it difficult to trace its etymology.
• Despite extensive investigation, the painting's obscure origin remained a secret.
• His family claimed an obscure origin, preferring not to discuss their past.
• The cult had an obscure origin in a remote mountain village.
• Many myths attempt to explain the obscure origin of the universe.
• The detective was frustrated by the criminal's obscure origin.
• She wrote a historical novel about a hero with an obscure origin.
• The plant species had an obscure origin in the Amazon rainforest.