1
[ adjective ] conducted with or marked by hidden aims or methods

Synonyms

secret clandestine undercover underground hush-hush hugger-mugger surreptitious hole-and-corner cloak-and-dagger

Examples

"clandestine intelligence operations" "cloak-and-dagger activities" "secret missions" "surreptitious mobilization of troops" "an undercover investigation" "underground resistance"

Related terms

covert

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Similar Spelling

on_the_QT on_the_qui_vive on_the_Q.T. on_the_spot on_the_side on_the_go on_the_sly on_the_job on_the_hook on_the_contrary

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