{"era":"current","word":"radical","meaning":"Relating to or affecting the fundamental nature of something; far-reaching or thorough.","children":[{"era":"1300s","word":"radical","meaning":"fundamental","children":[{"era":"1200s","word":"rādicālis","meaning":"of or pertaining to the root","children":[{"era":"classical","word":"rādix","meaning":"root","children":[],"language":"Latin"}],"language":"Late Latin"}],"language":"Old French"}],"language":"Modern English"}