sea change

In William Shakespeare's The Tempest, a sea change is a change brought about by the sea, as illustrated by the words of the sprite Ariel to Ferdinand, said to make the prince believe that his father has perished in a shipwreck: "Full fathom five thy father lies...; / Nothing of him that doth fade / But doth suffer a sea-change / into something rich and strange." This meaning of sea change is the original one, but it's now archaic. Long after sea change had gained its figurative meaning—that of any marked or permanent transformation—writers nonetheless continued to allude to Shakespeare's literal one; Charles Dickens, Henry David Thoreau, and P.G. Wodehouse all used the term as an object of the verb suffer, but now a sea change is just as likely to be undergone or experienced.