[{"Bold_text": "verb (used with object)", "List Items": ["to take upon oneself, as a task, performance, etc.; attempt:She undertook the job of answering all the mail.", "to promise, agree, or obligate oneself (followed by an infinitive):The married couple undertook to love, honor, and cherish each other.", "to warrant or guarantee (followed by a clause):The sponsors undertake that their candidate meets all the requirements.", "to take in charge; assume the duty of attending to:The lawyer undertook a new case."]}, {"Bold_text": "verb (used without object)", "List Items": ["Archaic.to engage oneself by promise; give a guarantee, or become surety."]}]