sneak off
Verb
Meaning
leave furtively and stealthily
Source: WordNetSynonyms
Hypernyms
Examples
Having a day job again I found really kind of fueled my fiction, because it became almost this forbidden thing where I had to sneak off and do it in private.
The lecture was boring and many students slipped out when the instructor turned towards the blackboard
All she is waiting for is her brother's Christmas Eve wedding to be over and then she plans to sneak off before anyone notices.
The person could then come back a few days later to grab the device and sneak off with it, leaving no trace of keylogging software or suspicious network activity.