Apostrophe (figure of speech)

An apostrophe is an exclamatory figure of speech. It occurs when a speaker breaks off from addressing the audience and directs speech to a third party such as an opposing litigant or some other individual, sometimes absent from the scene. Often the addressee is a personified abstract quality or inanimate object. In dramatic works and poetry written in or translated into English, such a figure of speech is often introduced by the vocative exclamation, "O". Poets may apostrophize a beloved, the Muses, God or gods, love, time, or any other entity that can't respond in reality.

Examples

"O death, where is thy sting? O grave, where is thy victory?",, Paul the Apostle
"O, pardon me, thou bleeding piece of earth, / That I am meek and gentle with these butchers! / Thou art the ruins of the noblest man / That ever lived in the tide of times.", William Shakespeare, Julius Caesar, act 3, scene 1
"O happy dagger! This is thy sheath; there rest, and let me die.", Romeo and Juliet, act 5, scene 3,
"To what green altar, O mysterious priest, / Leadst thou that heifer lowing at the skies, / And all her silken flanks with garlands drest?", John Keats, Ode on a Grecian Urn
"O eloquent, just, and mighty Death!", Walter Raleigh, A Historie of the World
"Thou hast the keys of Paradise, oh just, subtle, and mighty opium!", Thomas Quincey, Confessions of an English
"Roll on, thou dark and deep blue Ocean – roll!", Lord Byron, Childe Harolds Pilgrimage
"Thou glorious sun!", Samuel Coleridge, This Bower
"Death, be not proud, though some have called thee / Mighty and dreadful, for thou art not so.", John Donne, Holy Sonnet X
"And you, Eumaeus ...", Homer, the Odyssey, 14.55, κτλ ...
"O My friends, there is no friend." Montaigne, originally attributed to Aristotle
"O black night, nurse of the golden eyes!", Electra in Euripides's, Electra,, in the translation by David Kovacs
"Then come, sweet death, and rid me of this grief.", queen Isabel in Edward II; by Christopher Marlowe.