What does "sneak peek" mean?

A preview, especially of something not yet public.

What is a synonym for "sneak peek"?

Common synonyms include: peeking, preview, previews, prevue, prevues.

noun, slang

noun, slang ·Uncommon ·College level

Noun

1
A preview, especially of something not yet public. informal
"Visit the website for a sneak peek of their new movie."
2
An early view of an unreleased product wordnet

"Visit the website for a sneak peek of their new movie."