a priori

US /ˌeɪ praɪˈɔːraɪ/
UK /ˌeɪ praɪˈɔːraɪ/
"a priori" picture
1.

a priori, préalable

relating to or denoting reasoning or knowledge which proceeds from theoretical deduction rather than from observation or experience.

:
It is difficult to make a priori assumptions about human behavior.
Il est difficile de faire des hypothèses a priori sur le comportement humain.
The argument was based on a priori reasoning, not empirical evidence.
L'argument était basé sur un raisonnement a priori, et non sur des preuves empiriques.
1.

a priori, d'emblée

from theoretical deduction rather than from observation or experience.

:
We know a priori that all bachelors are unmarried.
Nous savons a priori que tous les célibataires sont célibataires.
The conclusion was reached a priori, without any new data.
La conclusion a été atteinte a priori, sans aucune nouvelle donnée.