A tie tac, sometimes written as tie tack, is a small accessory that is used to secure a necktie to a shirt. While this term has been in use for many years, there are many synonyms for this accessory. Some of the most common alternatives include tie pin, tie clip, cravat pin, cravat clip, and tie bar. Each of these terms refers to the same basic accessory, though they may have slightly different designs or features. Whether you're looking for a classic tie tac or a more modern tie bar, there are many different options available to suit your style preferences and needs.