[{"Bold_text": "noun", "List Items": ["a person who vouches or is responsible for a person or thing.Synonyms: guarantor , backer , patron", "a person, firm, organization, etc., that finances and buys the time to broadcast a radio or television program so as to advertise a product, a political party, etc.Synonyms: advertiser", "a person who makes a pledge or promise on behalf of another.", "Christianity.a person who promises to mentor a youth or new convert preparing for confirmation or initiation, or who answers for an infant at baptism."]}, {"Bold_text": "verb (used with object)", "List Items": ["to act as sponsor for; promise, vouch, or answer for.Synonyms: underwrite , back , finance , guarantee"]}]