←
Middle English spien (inherited)
←
Middle English espien (mention)
←
Proto-Indo-European *speḱ- (root)
←
Proto-Indo-European *speḱ- (derived)
→
Spanish espía (cognate)
→
Galician espía (cognate)
→
Japanese スパイ (borrowed)
→
Sanskrit स्पश् (cognate)
→
Albanian shoh (cognate)