Verb
leave furtively and stealthily
Source: WordNetHaving 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. Jennifer Weiner
The lecture was boring and many students slipped out when the instructor turned towards the blackboard Source: Internet
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. Source: Internet
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. Source: Internet