A tie tack is a small pin that is worn on a tie to hold it in place. However, there are many synonyms that can be used for this accessory. For example, tie pin is a common term that is often used interchangeably with tie tack. A tie clip is another alternative that serves the same purpose. A tie bar is a more modern term that describes a longer and more decorative accessory that can hold the tie in place. Additionally, a tie chain is a long chain that is attached to the collar and the tie, providing added security. No matter what term is used, the function of a tie tack remains the same: keeping your tie neat and tidy all day long.