Define This: Tautology
Defining something as itself or using a word twice in a sentence with the aim of providing deeper meaning yet failing to do so. For example, the following sentences would serve as an example of tautology. “Tautology means tautology. Simplicity is when something is simple. She was good because she was goodly.”
Use it in a Sentence
Prominent satirical authors use tautology as a device to introduce humor in their works by repeating ideas in one sentence.