Which word refers to the ability to express oneself clearly and effectively?

The term that refers to the ability to express oneself clearly and effectively is "articulate." This word is often used to describe individuals who can convey their thoughts and ideas in a coherent and persuasive manner. Being articulate involves not only the clarity of speech but also an effective choice of words and a confident delivery, allowing the speaker to connect with the audience and convey their message successfully.

In contrast, the other words describe less effective forms of communication. "Mumble" implies speaking in a way that is unclear, often due to low volume or lack of enunciation, making it difficult for listeners to comprehend the words being spoken. "Prevaricate" refers to speaking in a way that is evasive or misleading, often avoiding the truth, which undermines clear expression. "Whisper," while it can be clear, typically involves speaking softly and might not be sufficient for clear communication, especially in larger groups or noisy environments. Therefore, "articulate" stands out as the word that encapsulates clear and effective self-expression.