[{"Bold_text": "noun", "List Items": ["a gross, stupid, or careless mistake:That's your second blunder this morning.Synonyms: error"]}, {"Bold_text": "verb (used without object)", "List Items": ["to move or act blindly, stupidly, or without direction or steady guidance:Without my glasses I blundered into the wrong room.", "to make a gross or stupid mistake, especially through carelessness or mental confusion:Just pray that he doesn't blunder again and get the names wrong."]}, {"Bold_text": "verb (used with object)", "List Items": ["to bungle; botch:Several of the accounts were blundered by that new assistant.", "to utter thoughtlessly; blurt out:He blundered his surprise at their winning the award."]}]