Meaning of sleeper cell | Babel Free
Definitions
A group of people (sleepers) who inconspicuously remain dormant in a community until activated, by a prearranged signal, in order to perform acts of espionage, sabotage, or terrorism.
Equivalents
CEFR level
B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
This word is part of the CEFR B2 vocabulary — upper intermediate level.