The school of atonal musical composition

plural of atonalism

Making amends to restore a damaged relationship; expiation. / (theology, often with capitalized initial) The reconciliation of God and mankind through the death of Jesus.

(music) Lacking a tonal center or key. / (linguistics) Not tonal, lacking tones.

(transitive, intransitive) To make reparation, compensation, amends or satisfaction for an offence, crime, mistake or deficiency.

(of a sound or syllable) unstressed / (linguistics) not having tone (pitch) / (pathology) Lacking muscle tone. / (medicine) Characterized by atony, or want of vital energy.

(phonetics, dated) A sound with lack of tone or vocality.

In an atonal manner; without tone.

plural of atonement

(uncountable, music) A style of music that is written without a key. / (countable, music) A passage written without a key.