When someone looks shifty, their eyes keep darting around and they seem nervous or like they're hiding something. A shifty person might avoid eye contact, fidget constantly, or act suspicious when there's no obvious reason to be worried. Picture a student who claims they finished their homework but keeps glancing away and shuffling their feet while the teacher asks to see it.

The word describes both appearance and behavior that makes others think, “Something's not quite right here.” A shifty character in a story might lurk in shadows, speak in whispers, or change their story when questioned. Someone with shifty eyes seems to be watching for danger or looking for an escape route.

While shifty usually suggests dishonesty or untrustworthiness, sometimes people just look shifty when they're anxious or uncomfortable, even if they haven't done anything wrong. But the word carries a strong suggestion of sneakiness. When you describe someone as shifty, you're saying their manner makes you suspicious of their intentions. It's the kind of behavior that makes people wonder what you're really up to.