Apophatic theology is the tradition of describing God by what cannot be said about Him, emphasizing divine transcendence beyond human language and concepts. In 14th-century English mysticism, it shaped contemplative practice by encouraging the abandonment of images and intellectual reasoning in favor of silent love and inward attention. In The Cloud of Unknowing, this is central to the spiritual method, where the reader is instructed to move beyond thought into a “cloud” where God is encountered through unknowing rather than conceptual definition.

In contemplative prayer, the soul directs an act of the “loving power” (the will) toward God in a way that is “blind” because it does not rely on the “knowledgeable power” (the intellect), images, or concepts. Through this non-discursive, purely affective movement of the heart, the soul reaches and pierces the Cloud of Unknowing.

Defined by the author as the “love of God for Himself above all creatures, and of man for God even as thyself” (5). The author presents contemplation as the fullest exercise of charity, because it requires forgetting all created things (even oneself) in a love directed solely at God. In this work, all people are loved equally and nakedly for God’s sake.

The Cloud of Forgetting names the act of willing all created things—memories, thoughts, oneself, and even holy meditations—out of conscious awareness. This cloud must be established “beneath” the soul, between it and the world, to prevent distractions and enable the mind to remain focused on the “naked intent” toward God. It works in tandem with the Cloud of Unknowing: The soul pushes created things down through the Cloud of Forgetting while pressing upward toward God through the Cloud of Unknowing.

In the author’s framework, the Cloud of Unknowing is a spiritual “darkness” or “lacking of knowing” that stands between the soul and God—not a physical cloud but a condition in which the intellect reaches its limit and can go no further. Because the intellect cannot comprehend God, the soul must pierce this cloud by a “sharp dart of longing love” from the will rather than by any act of reasoning or imagining (24).

Doomsday, or the Last Judgment, is the Christian belief in the final moment when all souls are judged by God and creation is brought to its ultimate fulfilment. In medieval England, this doctrine carried intense psychological weight, especially after the Black Death, as it reinforced awareness of mortality and moral accountability. The Cloud of Unknowing reflects this worldview by urging constant spiritual readiness, but it shifts focus from fear of judgment toward loving contemplation of God in the present moment.

The Fall refers to the biblical narrative of Adam and Eve’s disobedience in Eden, resulting in the corruption of human nature and separation from God. Medieval English mysticism understood the Fall as the root condition that distorts human perception, making direct knowledge of God impossible without grace. In The Cloud of Unknowing, this idea underlies the claim that the intellect is clouded by sin and must be transcended through contemplative love rather than rational effort.

The author’s primary term for that which is spiritual, mental, or pertaining to the soul, as contrasted with that which is “bodily” or physical. He repeatedly warns the reader that his instructions for the contemplative work—such as “lift up thine heart” (66)—are to be understood in this non-physical, “ghostly” sense to avoid dangerous errors and misconceptions.

The two principal faculties of the soul, corresponding to the intellect and the will. The author argues that God is forever incomprehensible to the “knowledgeable power,” as no thought can encompass Him. However, He is fully comprehensible to the “loving power,” which can “gotten and holden” (grasp and hold) Him through a simple, directed act of love (24).

An obsolete term, explained in the Introduction, meaning a glad, eager, and energetic desire or activity. This describes the proper disposition for the contemplative, who should undertake the work “listily” and with a “soft and a demure behaviour” (71). This contrasts with a grim, forceful, or “boisterous” effort that strains the body and spirit.

A specific metaphor for how a contemplative should regard sin. Rather than analyzing or meditating on particular sins, one should conceive of sin as a single, undifferentiated “lump,” which is identical to oneself. This non-analytical feeling helps one forget the self and all its works, which is necessary for piercing the Cloud of Unknowing.

Defined as “a true knowing and feeling of a man’s self as he is” (34). The author distinguishes between imperfect meekness, which arises from the knowledge of one’s own wretchedness and sin, and perfect meekness, which comes from experiencing the “over-abundant love and the worthiness of God in Himself” (34). The contemplative work is the direct path to this perfect meekness.

A mystic is a person who seeks direct experiential union with God, while mysticism refers to the broader tradition of practices and writings aimed at achieving such union. In 14th-century England, mysticism developed as an interior form of devotion that emphasized contemplation, prayer, and affective knowledge over scholastic argument. The Cloud of Unknowing is a key expression of this tradition, presenting structured contemplative practice as a means of approaching God beyond thought and language.

The pure, unadorned volition at the heart of the contemplative work. It is an intention “directed unto God for Himself” (33), stripped of any specific thought, image, or desire for secondary benefits like release from pain or spiritual rewards. This focus on God alone, “without any other cause than Himself” (25), is the substance of the work.

An aphorism summarizing the book’s understanding of spiritual reality. The author insists that the contemplative work does not take place in a physical location or direction (neither “up” nor “down,” “in” nor “out”). This spiritual “nowhere,” when achieved, allows the soul to be present to the “everywhere” of God, who is a spirit unbound by place.

The state of spiritual union with God, which is the goal of the contemplative work. It signifies an “accordance of will” and a knitting together of the soul and God “in ghostly onehead” (72). The author describes this union as achieved not by thought but by “privy love” (private, secret love, invisible to the understanding) “pressed” upon the Cloud of Unknowing.

Original sin is the Christian doctrine that all human beings inherit a fallen nature due to Adam and Eve’s disobedience, resulting in an innate tendency toward sin and separation from God. Medieval English mystics understood this condition as affecting moral behavior, but also cognition, since the human mind is impaired in its ability to perceive divine truth. In The Cloud of Unknowing, this explains why intellectual effort alone cannot reach God, requiring a surrender of thought in contemplative love.

The Passion refers to the suffering and crucifixion of Jesus Christ, understood as the central act of redemption in Christian theology. In medieval devotional life, particularly in England, meditation on the Passion was a key practice for cultivating compassion, humility, and emotional devotion to Christ. The Cloud of Unknowing assumes this tradition but guides the contemplative beyond imaginative meditation on Christ’s suffering toward a formless awareness of God beyond images.

The author’s framework for the soul’s faculties, divided into principal and secondary powers. The principal powers—Memory, Reason, and Will—work purely in the spiritual realm. The secondary powers—Imagination and Sensuality—work through the body and its five senses. A key error in devotion is to use the secondary, bodily powers to attempt the ghostly work meant for the principal powers.

Purgatory is the intermediate state in Catholic doctrine where souls undergo purification after death before entering heaven. In 14th-century England, belief in purgatory shaped religious practice through prayers for the dead, masses, and penitential discipline aimed at reducing posthumous suffering. In The Cloud of Unknowing, while purgatory is not a central focus, the underlying logic of purification informs its emphasis on cleansing the mind of distraction and attachment so the soul may approach God in contemplative clarity.

A metaphor for the focused, energetic, and singular act of the will that pierces the Cloud of Unknowing. It describes a love that is not a gentle feeling but a deliberate, sharp, and swift action. This “dart” is the soul’s only tool for striking its target, which is God Himself.

A practical method for focusing the mind during contemplation. The author advises using a single-syllable word, such as “God” or “love,” as a tool to “smite down” distracting thoughts and to “beat on this cloud and this darkness” above (26). “Short prayer pierceth heaven” because its focused intensity contains the entire intent of the spirit (61).