1. One who watches like a spy.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• espire,
• wspier,
• sspier,
• dspier,
• 4spier,
• 3spier,
• ezpier,
• edpier,
• espieer,
• epier,
• espeir,
• Espyer,
• espyr,
• Espierre,
• Espyier,
• Espiire,
• Espiear,
• Espiaer,
• Espieur,
• Easpeer

The plural of the "Espier" can be the "espiers".

The singular of the "Espier" can be the "Espier".