Begin, commence, start, initiate, inaugurate, usher in mean to take the first step in a course, process, or operation. Begin, start, and commence are often interchangeable. We can use the verbs begin and start to mean the same thing but begin is more formal than start.
Begin is an irregular verb. See examples of begin used in a sentence. If you say that you cannot begin to imagine, understand, or explain something, you are emphasizing that it is almost impossible to explain, understand, or imagine.
Used with noun phrases if you start or begin something, you do it from a particular time. When you begin something, you go ahead with its first part or stage — you can begin the day with a good attitude, or begin a very long book over and over again, always falling asleep before you get to. Jul 7, 2025unlock the meaning of "begin" with our comprehensive glossary entry.
Definition of begin verb in oxford advanced american dictionary. To begin to do something means to start doing it.