incontestable because of having been demonstrated or proved to be demonstrable.
Logic. (of a proposition) necessarily true or logically certain.
Also ap·o·deic·tic [ap-uh-dahyk-tik] /ˌæp əˈdaɪk tɪk/, ap·o·dic·ti·cal.
Origin of apodictic
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for apodictically
Historical Examples of apodictically
To pass universal objective judgments, and to do so apodictically, reason must be free from subjective grounds of determination.
Thus the principle of causality can be apodictically proved as a condition of possible experience.
Online Etymology Dictionary, © 2010 Douglas Harper