sneaky

/ˈsniːki/
adjective
  1. Acting in a secret, sly, or dishonest way to avoid being noticed or to get an advantage.
    • She gave a sneaky smile when she got the last piece of cake.
    • My little brother is so sneaky; he hid my phone as a joke.
    • The sneaky fox stole the chicken from the coop.
  2. Happening or done in a way that is not easily noticed, often causing trouble.
    • A sneaky draft came through the crack in the window.
    • The test had a few sneaky questions that confused many students.
    • There's a sneaky shortcut through the woods that saves ten minutes.
Antonyms
What does "sneaky" mean? | whatsthatwordmean | whatsthatwordmean