General terms:
* Rhetoric: This refers to the art of using language effectively and persuasively. It encompasses a wide range of techniques, including the use of powerful words.
* Eloquence: This term refers to the ability to speak or write in a fluent and persuasive way. It often involves using vivid language, compelling imagery, and strong arguments.
* Forceful language: This is a more direct term that simply emphasizes the use of powerful words to convey a strong message.
More specific terms:
* Emphatic language: This emphasizes the importance of the message through the use of strong words and clear expression.
* Vivid language: This involves using sensory details, imagery, and evocative words to create a powerful impression.
* Emotional appeal: This focuses on using words that evoke strong emotions in the audience, such as fear, anger, or joy.
* Figurative language: This includes techniques like metaphors, similes, and personification to create a stronger impact and engage the audience's imagination.
The best term to use will depend on the specific context and the intended effect of the statement.