Blank verse is poetry written with regular metrical but unrhymed lines. It has been described as "probably the most common and influential form that English poetry has taken since the 16th century", and Paul Fussell has estimated that "about three quarters of all English poetry is in blank verse".

Paradise Lost is an epic poem in blank verse by the 17th-century English poet John Milton (1608–1674). The first version, published in 1667, consists of ten books with over ten thousand lines of verse. A second edition followed in 1674, arranged into twelve books with minor revisions throughout. It is considered to be Milton's masterpiece, and it helped solidify his reputation as one of the greatest English poets of all time. The poem concerns the biblical story of the fall of man: the temptation of Adam and Eve by the fallen angel Satan and their expulsion from the Garden of Eden.