Also called: Thumb opening · Acute-angled thumb · Obtuse-angled thumb · Right-angled thumb
Where on the hand: Measured from the edge of the palm to the extended thumb, with the hand relaxed and opened naturally.
What it looks like: Imagine a protractor arc from the palm's edge marked at 30°, 45°, 70° and 90°, and see which band the thumb naturally rests in.
The angle measures openness — of mind, of purse and of manner. The narrow thumb is guarded and self-contained; the middle range is the balanced norm; a right angle gives force and loyalty with a vengeful edge; beyond a right angle the reading turns to recklessness and extremism.
By band
- **≤ 30° (acute) — tight** — reserved, guarded, untrusting, secretive, cautious, mean. Indian classical: the acute-angled thumb is "classed as of evil quality" — frustration, laziness, wasting money, avoiding travel, unethical behaviour.
- **45–70° (the normal, obtuse range) — balanced** — "a healthy, responsible attitude with positive leadership qualities": confidence and generosity. Classical Indian: the obtuse-angled thumb, well-formed, long and thin, is gentle, temperate and artistic, excels in music and art, and has a childhood involving struggle. An extraordinarily long obtuse thumb is however read as inauspicious.
- **~90° (right angle) — wide** — classical Indian: prefers action to gossip, strong will, fierce loyalty, ready to sacrifice for country or society, but revengeful and short-tempered.
- **> 90° — extreme** — "overly flexible or reckless nature"; enthusiastic but negligent and irresponsible. Cheiro: a thumb standing almost at right angles to the palm "is not a good sign for ordinary success. Such people go to extremes in everything they do and are generally fanatics in religion, social reform, or whatever line of thought occupies their attention".
Related
- **Thumb–index gap** — the same measurement read as a finger gap: wide gives generosity, breadth of mind and courage; tight gives timidity, caution and meanness.
- **Set affects angle** — a low-set thumb naturally opens wider, a high-set thumb naturally narrower; read set and angle together.
Western reading: Cheiro reads the extreme angle as fanaticism rather than as generosity.
is not a good sign for ordinary success. Such people go to extremes in everything they do and are generally fanatics in religion, social reform, or whatever line of thought occupies their attentionCheiro, Palmistry for All (1916)
Palmistry is a traditional interpretive art, not a science. Offered for reflection and self-understanding — not medical, legal or financial advice.