sleeper cell

Fetched 2026-10-26 (cache).

Datamuse reports no synonyms or antonyms for this word.

Noun

1. A [[group]] of [[people]] ([[sleeper]]s) who [[inconspicuously]] remain [[dormant]] in a [[community]] until [[activated]], by a [[prearranged]] [[signal]], [[in order to]] [[perform]] [[act]]s of [[espionage]], [[sabotage]], or [[terrorism]].

Source: Wiktionary · CC BY-SA 4.0 (Wiktionary dump) · cached copy, not a rewrite.