Peep
Definition 1 of 4
Pro Tip 1/3
Sneaky Peek
Use 'peep' when describing a look that's both quick and somewhat hidden or secretive. She peeped at the answers sheet when the teacher wasn't looking.
Pro Tip 2/3
Tiny Glimpse
'Peep' implies a very brief moment of sight, usually through a small space. Thomas peeped through the keyhole to see the surprise party preparations.
Pro Tip 3/3
Curiosity Context
Often conveys curiosity or nosiness, sometimes with a playful tone. Curiosity made the kitten peep into the empty box.