When it comes to men's jackets, there are several synonyms for the term "sport jacket." It is commonly known as a blazer, which is a dressy jacket made of heavy material. Another term commonly used is a sports coat, which is a casual jacket with a more relaxed fit. A tweed jacket is another synonym, which is a woolen jacket typically made of tweed fabric. A harrington jacket is also sometimes considered a sport jacket, which is a lightweight cotton jacket with a zippered front. A bomber jacket is another alternative, which is a short, fitted jacket typically made of leather or nylon. Regardless of the synonym used, a sport jacket is a versatile and stylish addition to any wardrobe.