espion (French) comes from Middle French espion, from Old French espion, from Frankish *spehō, from Frankish spehōn, from Proto-Germanic spehōną, from Proto-Indo-European speḱ- — to see, to look, to observe.
espion (French): spy
Definitions
spy
Ancestry of “espion”, step by step
espion traces back through two separate lines of ancestry.