{"era":"current","word":"setback","meaning":"an obstacle, delay, or reversal","children":[{"era":"current","word":"set back","meaning":"to hinder or delay","children":[{"era":"pre-1100","word":"set","meaning":"to place or put","children":[],"language":"Old English"},{"era":"pre-1100","word":"back","meaning":"the rear or reverse side; behind","children":[],"language":"Old English"}],"language":"Modern English"}],"language":"Modern English"}