1
general::
Phrase(s): slink away
to creep or slither away furtively. • The fox slunk away, leaving the henhouse as quietly as such a thing is possible. • I hope that the skunk will slink away as quietly as it came.
McGrawhill's American Idioms And Phrasal Verbs
2
general::
Also, slink off. Depart furtively, as in The shoplifter slipped an item into his coat pocket and slunk away, or After that severe scolding, she slunk off. This term employs slink in the sense of "move stealthily," a usage dating from the late 1300s.
American Heritage Idioms