[{"Bold_text": "verb (used with object)", "List Items": ["to injure or destroy by insidious activity or imperceptible stages, sometimes tending toward a sudden dramatic effect.", "to attack by indirect, secret, or underhand means; attempt to subvert by stealth.", "to make an excavation under; dig or tunnel beneath, as a military stronghold.", "to weaken or cause to collapse by removing underlying support, as by digging away or eroding the foundation."]}]