[{"Bold_text": "noun", "List Items": ["a person who is opposed to a particular practice, party, policy, action, etc."]}, {"Bold_text": null, "List Items": ["a prefix meaning “against,” “opposite of,” “antiparticle of,” used in the formation of compound words (anticline); used freely in combination with elements of any origin (antibody; antifreeze; antiknock; antilepton)."]}]