As a Noun: 1. A statement which you make to someone in which you say that you will definitely do something or give them something. English = promise, vow, commitment 2. A formal promise, particularly a formal promise to tell the truth in a court. English = oath. 3. The quality of being honest. English = honesty. As a Verb or Adjective: 1. To say to someone that you will definitely do something, or definitely give them something. English = promise, vow, make a commitment. 2. To be completely truthful about something and not hide anything. English = (be) honest. 3. . Interactive: 1. Used alone in response to a question about your intention to do something to mean that you will definitely do it. English = 'Promise!', 'I promise!', 'I swear!' and so on. 2. Used alone in response to a question about the truthfulness of what you have said to mean that what you have said is completely true and that you have been honest. English = 'Honestly!', 'Honest to God!', 'Cross my heart and hope to die!' As Modifier: 1. Used at the beginning of a sentence to mean that what you are about to say is completely truthful. English = honestly, truthfully, to tell you the truth.