The opposite of "more beginning" can be taken as "end" which means the conclusion of something. When we talk about the end, it refers to the final stage, the finish line, or the culmination of a particular period or activity. Another synonym for the opposite of "more beginning" is "conclusion" which denotes the ultimate resolution and outcome of a matter. Other antonyms for "more beginning" could be "termination", "cease", or "conclude". All these words represent the end of something and mean the opposite of "more beginning" which signifies the start, genesis, or origin of something.