spy

spy · noun

imported

Definitions

noun

  1. 1.

    A person who secretly gathers information about enemies or competitors.

  2. 2.

    [as verb]To watch secretly; to catch sight of.

Forms

plural: spies

Related words

See also: agent, espionage, secret
Synonyms: agent, informer

Etymology

From Old French espier ("to spy"), from Germanic origin.