Definition of pur et simple in English:
pur et simple
(also pure et simple)
adjective ˌpjʊə(r) eɪ ˈsampləˌpjʊə(r) eɪ ˈsãpl(ə)
Following a noun: = "pure and simple". Now rare.
Origin
Mid 19th century; earliest use found in The Times. From French pur et simple from pur + et and + simple.