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sneak out
Depart furtively
sneak up on
Approach someone furtively
sneak away
To leave a place, or a meeting, without being seen or heard
sneak in
To enter without being noticed
To barely advance or be allowed entry in a competition or organization despite minimal credentials or competitors thought to be superior.
sneak off
To leave a place, or a meeting, without being seen or heard
sneak up
To approach a person or animal without being seen or heard