Pronunciation: /klænˈdɛstɪn/
adjective denoting something that is kept secret or done secretly, often because it is illicit
A1 The children had a clandestine meeting in the treehouse.
A2 She received a clandestine message from an unknown sender.
B1 The group planned a clandestine operation to rescue the hostages.
B2 The spy conducted clandestine activities behind enemy lines.
C1 The clandestine organization operated in the shadows, undetected by authorities.
C2 The clandestine meeting of world leaders was kept under tight security measures.
formal The espionage agency conducted a clandestine operation to gather intelligence.
informal They had a clandestine meeting behind closed doors.
slang They were up to some shady, clandestine business.
figurative The clandestine whispers of the trees in the wind seemed to hold secrets of the past.
clandestined
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