{"era":"current","word":"dementia","meaning":"A progressive decline in cognitive function, especially memory and reasoning.","children":[{"era":"classical","word":"dementia","meaning":"Madness or lack of mind.","children":[{"era":"classical","word":"de-","meaning":"Away from, down from, or reversal.","children":[],"language":"Latin"},{"era":"classical","word":"mens","meaning":"Mind, thought.","children":[],"language":"Latin"}],"language":"Latin"}],"language":"Modern English"}