The word "beginning" literally means the start or the commencement of something. The antonyms of this word are the opposite or contrast of this meaning. Some of the antonyms of "beginning" include ending, finish, conclusion, termination, closure, and completion. These words signify something that is over, done, or completed in contrast to a beginning. Some other antonyms for "beginning" could be middle, midpoint, and continuation. Antonyms for "beginning" help to contrast the initial stage with a stage that is advanced or completed. In the English language, it's essential to understand and use antonyms correctly to effectively communicate meaning.