"Semper Fielis", or "Semper Fi" (IPA: sɛm pər ˈfаɪ) for short, is Latin for "Always faithful." Best known to Americans as the motto of the United States Marine Corps, this phrase has served as a slogan for many families and entities dating as far back as the 14th century. Within the groups below, users are listed in chronological order according to when they are believed to have adopted the motto; however, in many cases dates of adoption are not well established.