Tuxedo coat, also known as a dinner jacket, is a formal coat that is an essential attire for upscale events. It is a variation of a tailcoat that has become increasingly popular and fashionable over the years. The tuxedo coat is characterized by its black or midnight blue color, satin-like or grosgrain lapels, and one or two buttons. There are various synonyms for the tuxedo coat, including dinner suit, evening wear, formal wear, black tie, tailcoat, and smoking jacket. These synonyms reflect the different styles and variations of the tuxedo coat that cater to different preferences and occasions.