A metanarrative (also meta-narrative; French: métarécit) in critical theory and particularly in postmodernism is a narrative about narratives of historical meaning, experience or knowledge, which offers a society legitimation through the anticipated completion of a (as yet unrealized) master idea.
"Meta" is Greek for a comprehensive idea that is beyond, behind, and transcendent; "narrative" is a story that is characterized by its telling (it is communicated somehow).
Although first used earlier in the 20th century, the term was brought into prominence by Jean-François Lyotard in 1979, with his claim that the postmodern was characterised precisely by a mistrust of the grand narratives (Progress, Enlightenment emancipation, Marxism) that had formed an essential part of modernity.
In The Postmodern Condition: A Report on Knowledge (1979), Lyotard highlights the increasing skepticism of the postmodern condition toward the totalizing nature of metanarratives and their reliance on some form of "transcendent and universal truth":
Simplifying to the extreme, I define postmodern as incredulity toward metanarratives[. ..] The narrative function is losing its functors, its great hero, its great dangers, its great voyages, its great goal. It is being dispersed in clouds of narrative language[...] Where, after the metanarratives, can legitimacy reside?
Lyotard and other poststructuralist thinkers (like Foucault) view this as a broadly positive development for a number of reasons. First, attempts to construct grand theories tend to unduly dismiss the naturally existing chaos and disorder of the universe, the power of the individual event. Second, as well as ignoring the heterogeneity or variety of human existence, metanarratives are created and reinforced by power structures and are therefore untrustworthy.