English for Today by Ganiu Abisoye Bamgbose (Dr GAB)
The Grammar of Sounds
It’s not these facts ~per say~ that are important (nonstandard).
It’s not these facts per se that are important (standard).
She’s an administrator ~per excellence~ (nonstandard).
She’s an administrator par excellence (standard).
It travelled at 85 miles ~par hour~ (nonstandard).
It travelled at 85 miles per hour (standard).
GAB
No comment