1. Conducted with or marked by hidden aims or methods
   "clandestine intelligence operations"
   - cloak-and-dagger, hole-and-corner, hugger-mugger, hush-hush, secret, surreptitious, undercover, underground

See also: covert

Encyclopedia: Clandestine

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• blackberry
• blackberry bush
• blackberry-lily
• blackbird
• blackboard
• blackboard eraser
• blackbody
• blackbody radiation
• blackbuck
• Blackburn
• Blackburnian warbler
• blackcap
• blackcap raspberry
• blackcock
• blackdamp
• bush nasturtium
• bush out
• bush pea
• bush poppy
• bush shrike
• bush vetch
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• bushbaby