slyness
🇺🇸
/ˈslaɪnəs/
🇬🇧
/ˈslaɪnəs/
The act of being sneaky and trying to deceive others.
Her slyness was evident when she secretly took the last piece of cake.
The quality of knowing something that others don't, often with a secretive or cunning air.
The cat's slyness was clear as it hid the stolen fish under the couch.