What term describes the ability to express oneself clearly and effectively?

The ability to express oneself clearly and effectively is best described by the term "articulate." This word refers to the skill of communicating thoughts and ideas in a coherent and persuasive manner, making it vital in contexts such as public speaking, writing, and interpersonal communication. An individual who is articulate can convey their messages in a way that connects with the audience, ensuring clarity and impact.

The other terms do not encapsulate this specific concept. "Ascertain" refers to the act of finding out or discovering information, which does not relate to the manner of expression. "Astringent" describes a substance that causes contraction or has a drying effect, commonly used in a medical or culinary context, rather than in communication. "Astute" characterizes someone who is clever and perceptive, particularly in understanding situations or making judgments, but does not directly pertain to the clarity of expression itself. Thus, "articulate" is the most appropriate term to describe effective communication abilities.