adjective characterized by, done in, or executed with secrecy or concealment, especially for purposes of subversion or deception; private or surreptitious: Their clandestine meetings went undiscovered for two years.
Origin: 1560–70; <
Latin clandestīnus, equivalent to
*clande, *clamde, variant of
clam secretly (with
-de adv. particle) +
-stīnus, probably after
intestīnus internal;
see intestine Related formsclan·des·tine·ly, adverb
clan·des·tine·ness, clan·des·tin·i·ty, noun
un·clan·des·tine·ly, adverb
Synonyms
hidden, underhand, confidential, illicit.