Despite its American sound and its common use by the fiery animated cartoon character Yosemite Sam, smithereens did not originate in American slang. Although no one is entirely positive about its precise origins, scholars think that smithereens likely developed from the Irish word smidiríní, which means "little bits." That Irish word is the diminutive of smiodar, meaning "fragment." According to print evidence, the plural form smithereens first appears in English in the late 18th century; use of singular smithereen then follows.