{"era":"current","word":"grieve","meaning":"to feel deep sorrow","children":[{"era":"1100s-1400s","word":"greven","meaning":"to trouble, afflict, or sorrow over","children":[{"era":"1100s-1400s","word":"grever","meaning":"to burden, trouble, or hurt","children":[{"era":"classical","word":"gravare","meaning":"to weigh down, burden, or make serious","children":[{"era":"classical","word":"gravis","meaning":"heavy, serious, burdensome","children":[],"language":"Latin"}],"language":"Latin"}],"language":"Old French"}],"language":"Middle English"}],"language":"Modern English"}