Ethelred the Unready is a historical figure who is known for his reign as the King of England during the late 10th and early 11th century. While he is often referred to by this particular name, there are several other synonyms for Ethelred the Unready that people may use. Some of these synonyms include Ethelred II, Ethelred the Redeless, and Ethelred the Ill-Advised. Each of these names carries a slightly different connotation, with "Redeless" meaning "without counsel" or "unwise" and "Ill-Advised" suggesting poor decision-making abilities. Regardless of the synonym used, Ethelred the Unready's reign was a tumultuous one in English history.