Definition of "undiagnosed" []

• That had not been diagnosed (adjective)

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• "How many remain undiagnosed is not clear, but doctors say both forms are increasing, and schools have noticed, too."
• "This could put added stress on the mental health screening program for returning veterans, which could lead to a rise in undiagnosed mental health issues."
• "The word undiagnosed sticks out like a sore thumb."