sneakiness
/ˈsniːkinəs/
noun
- The quality or behavior of being secretive, dishonest, or sly in order to avoid being noticed or to get what you want.
- The sneakiness of the plan made everyone suspicious.
- Her sneakiness helped her avoid chores, but it annoyed her parents.
- I don't trust his sneakiness; he always hides what he's doing.