{"era":"current","word":"defenseless","meaning":"lacking any form of defense and therefore vulnerable to attack","children":[{"era":"1200s","word":"defense","meaning":"protection against attack","children":[{"era":"1200s","word":"defense","meaning":"protection; defense","children":[{"era":"classical","word":"defendere","meaning":"to ward off; protect","children":[],"language":"Latin"}],"language":"Old French"}],"language":"Middle English"},{"era":"pre-1100","word":"-less","meaning":"without","children":[{"era":"pre-1100","word":"-lēas","meaning":"without; lacking","children":[],"language":"Proto-Germanic"}],"language":"Old English"}],"language":"Modern English"}