-mancy, -mancer, -mantic, -mantical

(Greek: used as a suffix; divination, prophecy, fortune telling; to interpret signs so “practical” decisions can be made [related to -mania])

It isn't so much the things we don't know that gets us into trouble. It's the things we know that aren't so.

—Artemus Ward (1834-1867)

If you keep on saying things are going to be bad, you have a good chance of being a prophet.

—Isaac Bashevis Singer (1904-1991),
Polish-born American journalist, writer.
eychnomancy
Divination with lamps.
felidomancy
Divination by observing the behavior or actions of a cat (or cats), ranging in predictions about changes in the weather to unexpected visitors.

Dating from the Middle Ages, many of these have survived as popular superstitions.

floromancy
Divination with flowers or plants, including their colors, petals, and time and place of planting.

A belief that flowers radiate vibrations and have curative properties in healing disease. Many omens concerning the gathering of flowers at Midsummer’s Eve have survived to modern times; and the “good luck” commonly attributed to the finding of a four-leaf clover falls into this category.

foliomancy
Divination with tea leaves.
gastromancy (s) (noun), gastromancies (pl)
1. Telling someone's fortune by listening to stomach sounds which were interpreted as words: "Gastromancy often included ventriloquism, which sounded very low and hollow, making people think that it was coming from the stomach."
2. The art of fortune-telling by using a clear, 'pot-bellied' glass bowl which was full of water and placed in front of candles: "This form of gastromancy preceded crystall-ball gazing as another type of telling fortunes."
3. Etymology: from Greek gastromanteia, "divination by the belly"; consisting of gaster, "pot-belly" + mant-eia, "power of divination" or "fortune telling"

The element, manteia, or -mancy, is related to Latin mens, mentis, "mind, soul, feelings".

gelomancy
Divination by translating hysterical laughter into coherent terms.

Perhaps it was a carry-over from ancient oracles, where people inhaled natural gas from volcanic fissures and babbled incoherent utterances which gifted listeners interpreted as prophecies that determined the fate of nations.

geomancy
1. Divination by the analysis of figures or lines drawn in dirt (or on paper).
2. A system of divination by scattering pebbles, dust, sand grains, or seed on the ground and interpreting their shapes and positions.
3. Making marks on the ground with a stick (now with a pencil or pen on paper).

Still used by modern-day Chinese in Hong Kong and other places before construction of a building takes place.

graphomancy
Divination, or fortune telling, with handwriting analysis.
grapthomancy
A form of divination involving the examination of a person’s handwriting.
gyromancy
Divination by walking in a circle until dizziness caused a person to fall and this was interpreted in various ways.
Gyomancy or whirling-around divination.
There certainly is a message for both the diviner and
the subjects who are passing out in this divination exhibition.

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Originally, it was performed by people who moved around a circle marked with letters or symbols, until they became dizzy and stumbled, thus spelling out words or enabling a diviner to interpret the symbols. Some authorities say that it was from this concept that came the wild, whirling dances by fanatics who uttered prophecies after collapsing in a state of complete exhaustion.

halomancy
Divination with the use of salt (one method was by interpreting the shape of salt which was thrown on a flat surface).

Interpretation of the shapes which are formed after salt is thrown on a surface or by throwing salt into flames and observing the nature of the flames, their color, speed, and direction.

haruspimancy
Divination by the “reading” the livers of sacrificed victims (animal and/or human).
heliomancy (s) (noun), heliomancies (pl)
Divination or godliness by observing and interpreting the various features of the sun.
hematomancy, haematomancy
Divination with the use of blood.
hidromancy
Divination with water, tides, and ebbs.

Cross references of word families that are related directly, or indirectly, to: "divination, diviner; seer, soothsayer, prophecy, prophesy, prophet": augur-; auspic-; fa-, fate; Fates in action; futur-; omen; -phemia; sorc-, sorcery; vati-.

A cross reference of other word family units that are related directly, or indirectly, to: "chance, luck, fate": aleato-; auspic-; cad-; fortu-; serendipity; sorc; temer-; tycho-.