[{"Bold_text": "noun", "List Items": ["great destruction or devastation; ruinous damage.Synonyms: waste , ruin , desolation"]}, {"Bold_text": "verb (used with object)", "List Items": ["to work havoc upon; devastate ."]}, {"Bold_text": "verb (used without object)", "List Items": ["to work havoc:The fire havocked throughout the house."]}]