Thumb in palmistry
In palmistry the thumb is read for willpower, reasoning and how you deal with the world. Its length, how it is set on the hand and whether it bends back easily describe determination, logic and adaptability.
Cheiro gave the thumb a chapter of its own and counted it among the most revealing parts of the hand, and Indian palmists give it special weight too. It is read in three parts: the top section, with the nail, for will; the middle section for logic and reason; and the base, the Mount of Venus, for warmth and love.
A long thumb, reaching beyond the middle of the lowest section of the index finger when held alongside it, suggests strong will and good judgement; a short one, someone guided more by feeling. A thumb set low, opening wide from the hand, suggests independence and generosity; one set high and held close, caution.
Flexibility matters too. A thumb that bends back easily is linked with adaptability, generosity and openness to others; a firm, straight one with determination, consistency and a strong sense of purpose.
A flexible thumb does not mean a weak will. Palmists read will from the length and shape of the top section; flexibility describes how readily you bend to circumstances, which is often a strength.