This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

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adj. Necessarily or demonstrably true; incontrovertible.

adj. Incontrovertible; demonstrably true or certain.

adj. A style of argument, in which a person presents their reasoning as categorically true, even if it is not necessarily so.

adj. absolute and without explanation, as in a command from God like "Thou shalt not kill!"

adj. Same as apodeictic.

Demonstrative; incontestable because demonstrated or demonstrable; of the nature of necessary proof.

In logic, a term descriptive of a form of judgment in which the connection of subject and predicate is asserted to be necessary; asserting its own necessity.

n. The logical doctrine of demonstration and of science.

adj. of a proposition; necessarily true or logically certain

"As music, I have come to believe that it is the most perfect music that exists, so much so that I encounter every new chant with apodictic certainty of eventually discovering its profundity."

true   

assertorical    problematic   

apodictical    apodictically   

apodeictic   

open-and-shut    himself-the    either/or    sick-making    with=20    hundred-percent    inalterable    one-hundred-percent    self-reference    gut-level