- To enter without being noticed
- I'm going to try to sneak in by the back door.
2011 September 2, “Wales 2-1 Montenegro”, BBC:
- Welsh nerves continued to jangle as Blake let a long ball bounce over his head and only Wayne Hennessey's swift advance from his line prevented Mirko Vucinic sneaking in.
- To barely advance or be allowed entry in a competition or organization despite minimal credentials or competitors thought to be superior.
- With Newport's team suffering from injuries, Springfield was able to sneak in to the quarter-finals.
- Despite a mediocre grade in English, Pat just managed to sneak in to the university.
to enter without being noticed