An asyndeton is a sentence that doesn't have a conjunction where you would expect it to be. A conjunction is a word that can put two independent clauses (or complete sentences) together. Some examples of conjunctions include the words and, yet, but, or for, and nor.
Examples of asyndetons include:
- The sun was shining; it was a beautiful day.
- The stadium was packed; it was the biggest football game of the year.
As you can see, the easiest way to create an asyndeton is to use a semicolon, (;) which can be used to replace a conjunction by connecting two complete sentences.
Hope I helped! :)