ESPIONAGE
espionage
(noun) the systematic use of spies to get military or political secrets
Source: WordNet® 3.1
Etymology
Noun
espionage (countable and uncountable, plural espionages)
The act or process of learning secret information through clandestine means.
Synonyms
• spying
Coordinate terms
• reconnaissance
• undercover
Anagrams
• sea pigeon
Source: Wiktionary
Es"pi*o*nage, n. Etym: [F. espionnage, fr. espionner to spy, fr.
espion spy, OF. espie. See Espy.]
Definition: The practice or employment of spies; the practice of watching
the words and conduct of others, to make discoveries, as spies or
secret emissaries; secret watching.
Source: Webster’s Unabridged Dictionary 1913 Edition