ˌripˌvanˈwiŋkəl noun
( -s )
Usage: usually capitalized R&V&W
Etymology: after Rip Van Winkle, fictional ne'er-do-well in the Catskill mountains of New York state in colonial days who slept for 20 years, as portrayed in a story of The Sketch Book (1820) by Washington Irving died 1859 American writer
: someone not alert to current conditions
some Rip Van Winkle in an obscure corner … who has read nothing for four years — Manchester Guardian Weekly