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sleeper

sleeper

18 9.5
A spy who lives as a normal person until given orders to act
  • noun
  • /ˈsliːpər/
  • NSFW
translation icon : agente durmiente
  • Finally, there's the big reveal: the identity of the CIA sleeper agent assigned to Colorado.
  • sleeper cell
  • sleeper agent
  • sleeper terrorist

I think it's almost exactly a year ago now about the sleeper cells in Russia.

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Examples

  • It's an algorithm detailing how we activate our sleeper agents.

  • For some, that will never happen (witness sleeper cells here in the US).

    Blog text (20)
  • New Freedom has sleeper agents here in the U.S.

  • Maybe a sleeper cell, but it's too early to tell.

  • We're going to do everything we can to find the sleeper, but it may all come down to you.

    Fiction book (1996)
  • We operate in sleeper cells.

  • On a related note, Barry is a communist sleeper agent.

    Blog text (25)
  • They came before and created sleeper agents, like me.

  • Oddly enough, the Kennedy School also had a real Russian sleeper spy among its students.

    Blog text (22)
  • Law enforcement is increasingly focused on identifying sleeper agents who blend into society while waiting for instructions.

Synonyms

spy
vssleeper
623 2.9

A person who secretly collects information for a government or company

stays inactive inside civilian life until a secret cue begins operations
mole
vssleeper
82 8.2

A person who secretly works inside an organization to pass information to an enemy

is inactive and blends into civilian life until a set signal awakens them
undercover agent
vssleeper
18 4.1

A person who works secretly for the police to gather information while hiding who they are

lives as an ordinary person while remaining inactive until activated
fifth columnist
vssleeper
1 9.9

A person who secretly helps an enemy inside their country

remains inactive as a normal resident until a hidden order starts action
agent-in-place
vssleeper
  • Jargon
8.9

A person who works secretly inside another group to get information

lives openly as a resident but remains inactive until a secret signal

Compounds

6 8.9

A secret group of people who stay inactive until told to attack or spy

7.1

A person who sleeps outside because they have no home

sleeper cell
  • Specialized
7.5

A hidden program in a computer network that stays inactive until activated to do harm

sleeper goby
  • Australian
9.5

A small tropical fish that rests quietly on the shallow sandy bottom

9.9

A hidden group of people who stay inactive until they get orders to do illegal or violent acts

How Active

operative
201 7.3
agent-in-place
  • Jargon
8.9
sleeper
  • NSFW
18 9.5

Surface Forms

sleeper singular
sleepers plural

Morphology

sleeper = sleep (semi-transparent) = sleep + er

Formally derived from 'sleep' + '-er', but the specialised sense 'dormant agent' is a metaphorical extension not directly predictable by all learners.

Etymology

Sleeper comes from the root sleep 'to rest'. A sleeper agent 'sleeps' in plain view as a normal person until orders 'wake' them, which is why the word means a spy who is inactive until activated.