What is the meaning of Schleichen?

to move in a quiet and inconspicuous manner, hence often slowly and/or ducked: to crawl, to sneak, to steal, to prowl, to creep, to slither (of a snake)

to go somewhere in the above manner

to move slowly (especially in a car)

to slink away; to leave meekly or sheepishly

to piss off

Source: wiktionary.org