{"era":"current","word":"undefined","meaning":"Not clearly or precisely determined or established.","children":[{"era":"pre-1100","word":"un-","meaning":"not","children":[],"language":"Old English"},{"era":"1200s","word":"define","meaning":"to put an end to, to define","children":[{"era":"classical","word":"dēfīnīre","meaning":"to limit, to set bounds to, to define","children":[{"era":"classical","word":"fīnis","meaning":"end, limit","children":[],"language":"Latin"}],"language":"Latin"}],"language":"Old French"}],"language":"Modern English"}