An akathist (Greek, akathistos) is a hymn commemorating a holy person or event, or one of the persons of the Holy Trinity. The word akathist itself means “not sitting.”

When the word akathist is used alone, it most commonly refers to the original hymn by this name, the 6th century Akathist to the Theotokos, attributed to St. Romanos the Melodist. This hymn is often split into four parts and sung at the “Salutations to the Theotokos” service on the first four Friday evenings in Great Lent; the entire Akathist is then sung on the fifth Friday evening. Traditionally it is included in the Matins of the fifth Saturday of Great Lent. In monasteries of Athonite tradition, the whole Akathist is usually inserted nightly at Compline.

The four sections into which the Akathist is divided correspond to the themes of the Annunciation, Nativity, Christ, and the Theotokos herself. Though obviously related to the person of the Theotokos, each section of the Akathist directly or indirectly honors Christ God who became incarnate in her, and teaches the Orthodox understanding of the divine in carnation and the salvation of human beings.

The hymn itself forms an alphabetical acrostic—that is, each oikos (“house,” possibly from the Syriac terminology) begins with a letter of the Greek alphabet, in order—and it consists of twelve long and twelve short oikoi. Each of the long oikoi include a seven-line stanza followed by six couplets, using rhyme, assonance, and alliteration, beginning with the word Chaire (translated as either “Hail!” or “Rejoice!”) and ending with the refrain, “Hail, Bride without bridegroom!” In the short oikoi, the seven-line stanza is followed by the refrain, “Alleluia!”

The Trisagion Prayers are often said as a prelude to the akathist hymn. The akathist hymn itself is divided into thirteen parts, each of which has a kontakion and an oikos. The kontakion usually ends with the exclamation: “Alleluia!” Within the latter part of the oikos comes an anaphoric entreaty, such as “Come!” or “Rejoice!” The thirteenth kontakion (which does not have a corresponding oikos) is usually followed by the repetition of the first ikos and kontakion. After the thirteen kontakia and ikoi, additional prayers are added, such as a troparion and another kontakion. In some akathists, Psalms are also included.

An Akathist can be served in full in the church by a priest, or may be read or sung by laymen. (See the Order for Reading Canons and Akathists Alone.)