Final answer:
An entertaining speech is typically designed to be amusing and witty, using humor or clever wit to keep the audience engaged and entertained.
Step-by-step explanation:
An entertaining speech is usually characterized by its ability to amuse and captivate the audience, often making use of humor or wit. Therefore, the two most fitting adjectives from the provided list would be 'amusing' and 'witty'. This kind of speech is designed to be entertaining and engaging, often requiring the speaker to deliver it in an enjoyable manner, using fascinating anecdotes, clever jokes, and sharp wit to keep audiences not only interested but also amused.
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