All the letters
נ

Nun

When it is flowing

You move through changes that would sink other people. You are at home in the deep water where things end and begin again, and you can pass through a loss of one kind or another and surface renewed. People trust you with what is hidden, because you do not flinch from it.

When it is strained

You get pulled under by the depths instead of passing through them. Change can feel like a loss you will never come back from, or you circle the dark places and cannot find the surface. The same depth that lets you transform can become somewhere you get stuck, gripping what needs to be released.

The details

Letter
נNun
Category
Simple
Letter picture
The Fish · transformation
Planet / element
Scorpio ♏
Card
Death (XIII)
Path
Tiphareth ↔ Netzach

This system, and the Golden Dawn

Sefer Yetzirah (this system)

Scorpio ♏ · Death (XIII)

Golden Dawn

Scorpio ♏ ✓ · Death (XIII)

The two systems agree on this letter.

Across the three spheres

UniverseYearSoul
Scorpio ♏In preparationIn preparation

The Year and Soul columns are being rebuilt from Hayman §§39, 41, 52 and will fill in as that reading is verified.

Sources: Peter Hayman, Sefer Yesira (Mohr Siebeck, 2004). Aryeh Kaplan; Saadia Gaon commentary.