To withdraw or convey clandestinely (reflexive); hence, to creep furtively, or to insinuate.
To gain by insinuating arts or covert means.
To withdraw, or pass privily; to slip in, along, or away, unperceived; to go or come furtively.
move stealthily; "The ship slipped away in the darkness"
to go stealthily or furtively; "..stead of sneaking around spying on the neighbor's house"