non constat (non kon-stat). [Latin “it is not settled”] It is not certain or agreed. • The phrase is generally used to state that some conclusion does not necessarily follow although it might appear on its face to follow. Cf. NON SEQUITUR .
“Non Constat …. Words frequently used, particularly in argument, to express dissatisfaction with the conclusions of the other party: as, it was moved in arrest of judgment that the declaration was not good, because non constat whether AB was seventeen years of age when the action was
commenced.” 3 John Bouvier, Bouvier’s Law Dictionary 2355 (8th ed. 1914).
[Blacks Law 8th]