espionage

/ˈɛs.pi.əˌnɑːʒ/

Etymology

Recorded since 1793, from French espionnage, from espionner (“to spy”), from Middle French espionner (“to spy”), from espion (“spy”), from Old French espion (“spy”), from Frankish *spehō (“spy”), from Frankish *spehōn (“to spy”), from Proto-Germanic *spehōną (“to spy, peek, peer”). In modern times, the French pronunciation of the s, which had fallen silent since the 13th century, was restored due to the influence of Italian spione (“spy”), and was therefore also adopted by the English. More at spy.

noun

The act or process of learning secret information through clandestine means.“So intolerable did Heavy Benson's espionage become, that Raynham would have grown depopulated of its womankind had not Adrian interfered, who pointed out to the Baronet what a fearful arm his butler was wielding.”