When it comes to expressing a narrow or extremely close call, the phrase "a hair's breadth" proves to be invaluable. However, if you wish to add some variety to your language or simply find alternative ways to convey this idea, several synonyms can come in handy. Similar expressions include "by a whisker", "by a slim margin", and "by the skin of one's teeth". These phrases encapsulate the notion of barely escaping a challenging situation or achieving success in a tense or risky endeavor. With these synonyms, you can add a touch of creativity and diversity to your language while effectively conveying the concept of a close shave or a near miss.