{"era":"current","word":"accidental","meaning":"happening by chance rather than by intention","children":[{"era":"classical","word":"accidentalis","meaning":"accidental, incidental","children":[{"era":"classical","word":"accidens","meaning":"occurrence; chance event","children":[{"era":"classical","word":"accidere","meaning":"to happen, fall upon","children":[{"era":"classical","word":"ad + cadere","meaning":"to + fall","children":[{"era":"pre-1100 BCE","word":"*kad-","meaning":"to fall","children":[],"language":"Proto-Indo-European"}],"language":"Latin"}],"language":"Latin"}],"language":"Latin"}],"language":"Latin"}],"language":"Modern English"}