What does Ace of Swords mean reversed?

The Thoth Tarot is traditionally read without reversed cards: the reader judges from the cards around it whether a card is well or ill dignified. This is its ill-dignified or blocked reading: Thought that is confused or blocked, decisions postponed; or a lucidity that turns into cruelty and judgement.

What are the Kabbalah and astrology correspondences of Ace of Swords?

In the Golden Dawn system Ace of Swords corresponds to the sephirah Kether, the element Air and Root of Air in astrology.

Thoth Tarot · Minor Arcana

Ace of Swords — Root of the Powers of Air

Root of the Powers of Air

clarity · intellect · truth · decision · invocation

A reflective starting point

What is Ace of Swords — Root of the Powers of Air asking you to look at?

Meaning changes with the position, the surrounding cards and your question. Take what follows as a language, not a verdict.

Read this card in a ritual Draw it from your own deck

Upright

A truth becomes clear: decide with lucidity and act on what you have understood.

At first sight

Mental force in its pure state: an idea that cuts through fog, a clean decision, truth asserting itself. It announces clarifications, victories won through lucidity, new perspectives.

Within you

The mind that distinguishes: the ability to see things as they are and to name them. Every clarity, however, separates, and asks for the courage to accept what it uncovers.

On the path

The Ace in Kether: the root of Air and the Vau of the Tetragrammaton, the Son born of the union of Father and Mother. Its throne is the celestial quadrant of Capricorn, Aquarius and Pisces, governed by the Princess of Swords.

The shadow

Ill-dignified, it signals cutting coldness, fanaticism of ideas, words used as weapons.

Reversed

In the Thoth tradition a reversed card is read through its dignity with the neighbouring cards; this is its shadow side.

Thought that is confused or blocked, decisions postponed; or a lucidity that turns into cruelty and judgement.

In love, work and spirit

Love. A necessary clarification, a frank conversation that dissolves a misunderstanding.

Work. An intelligent solution to a problem, an intellectual project, a strategic decision.

Spirit. The Magus's sword: discriminating true from false in the service of the Will.

Correspondences

Kether · Air · Root of Air

Crowley's note

In the Thoth deck the Magus's sword rises toward a crown of twenty-two rays of light, with the word Thelema engraved on the blade, dispersing the clouds of the mind: the intellect illuminated by the Will.