covert

/ˈkoʊvərt/
adjective
  1. Not openly shown or done; secret or hidden.
    • The spy agency conducted a covert surveillance operation.
    • The organization's covert activities were finally exposed by journalists.
    • She gave him a covert signal from across the room.
Antonyms
noun
  1. A shelter or hiding place, especially for animals or birds.
    • Hunters waited quietly near the covert for birds to appear.
    • The rabbit darted into a thick covert under the bushes.
    • The forest was full of natural covets where animals could hide.
What does "covert" mean? | whatsthatwordmean | whatsthatwordmean