The Star, the trump of Aquarius
Major Arcana XVII · Hebrew letter Tzaddi · Air, fixed
Tzaddi supplies the Hebrew-letter link between Aquarius and The Star in Book T. This correspondence belongs to the system, rather than being a conclusion you need to draw from the card’s appearance. It gives you a starting point for reading the trump alongside the sign’s fixed Air qualities.
Air concerns thought, speech, and judgment; a fixed sign sustains rather than continually changes direction. Through that combination, The Star is read as the patient work of finding clarity after damage, with hope grounded in continued attention. After a damaging argument, you might acknowledge what was said, separate the disagreement from the personal attack, and keep a more honest conversation open.
The Star: upright, reversed, love and career →
The three decans of Aquarius
Aquarius is split into three parts of 10°, and each takes one of the Swords: the suit of Air, numbered Five to Seven for a fixed sign. Each decan also has a planet, and its trump is worth reading alongside.

V♠︎
1st decan · 0°–10° · January 20–29 · ♀︎ Venus in Aquarius · Lord of Defeat
Venus seeks ease and agreement, but in Aquarius those concerns work through thought and sustained positions. The Five of Swords is read as the cost of defending an idea until agreement becomes impossible. You might win a group debate by embarrassing someone whose cooperation you still need. The question is whether securing assent has replaced making the exchange worth having.
Planet card: The Empress (Venus)

VI♠︎
2nd decan · 10°–20° · January 30 – February 8 · ☿︎ Mercury in Aquarius · Lord of Earned Success
Leaving an argument can involve more thought than continuing it. With Mercury in Aquarius, speech and quick exchange work through a sign inclined to sustain its reasoning. The Six of Swords is read as a transition you can account for: you stop repeating a disputed proposal, summarize what remains unresolved, and move the discussion to a calmer setting.
Planet card: The Magician (Mercury)

VII♠︎
3rd decan · 20°–30° · February 9–18 · ☽︎ Moon in Aquarius · Lord of Unstable Effort
A private plan may look consistent while its motives shift. With Moon in Aquarius, moods and habits enter sustained thought, so you can examine whether a strategy rests on reasoning or on a recurring emotional response. The Seven of Swords is read as that tension when you quietly work around a colleague rather than explain why you disagree.
Planet card: The High Priestess (Moon)
The court card of Aquarius

K♠︎
20° Capricorn – 20° Aquarius · January 10 – February 8 · Air of Air
The King of Swords has a span beginning in Capricorn, so its Aquarius portion is read as a continuation of authority rather than a fresh start. That overlap lets you consider judgment already established before the present discussion. As Air of Air, it can describe you chairing a meeting: applying an existing rule while asking whether the argument for it still holds. For the final third of Aquarius, the court correspondence changes to the Knight of Cups.
The last 10° of Aquarius (February 9–18) belong to the Knight of Cups, which runs on to 20° Pisces. Books that swap the Kings and Knights read this card as Gemini.