From Latinper se (“by itself"), from per (“by, through") and se (“itself, himself, herself, themselves").
Latin per sēperpersēitself
American Heritage Dictionary of the English Language, 5th Edition
Per Se Sentence Examples
The three find no treasure per se but Joe retrieves some old parchment which was worth a lot more than it appears to.
It must be noted, however, that potential is a mere mathematical concept, and has no objective existence like difference of level, nor is it capable per se of producing physical changes in bodies, such as those which are brought about by rise of temperature, apart from any question of difference of temperature.
Of course, mystery shoppers are not real shoppers per se.
All cats are fostered; there is not a central shelter per se.
All of our investigations are not scientific, per se.