Oxford Dictionary English Murphy’s Law nounnoun BrE BrE//ˌmɜːfiz ˈlɔː// ; NAmE NAmE//ˌmɜːrfiz ˈlɔː// (humorous) Add to my wordlistjump to other resultsa statement of the fact that, if anything can possibly go wrong, it will go wrongCheck pronunciation: Murphy’s Law oxfordlearnersdictionaries.com