begun

verb

1. 1

   To start, to initiate or take the first step into something.

   “I began playing the piano at the age of five.   Now that everyone is here, we should begin the presentation.”

2. 2

   To be in the first stage of some situation

   “The program begins at 9 o'clock on the dot.    I rushed to get to class on time, but the lesson had already begun.”

3. 3

   To come into existence.