sneak (n.)
- blackguard
- caitiff
- couch
- covert
- craven
- crawl
- creep
- crouch
- cur
- dastard
- devil
- fink
- glide
- grass
- gumshoe
- heel
- inch
- informer
- knave
- louse
- nark
- pad
- poltroon
- prowl
- quail
- rapscallion
- rascal
- recreant
- reptile
- rogue
- run
- scalawag
- scamp
- scoundrel
- scrabble
- scramble
- shadow
- shithead
- shyster
- skunk
- slide
- slip
- sly
- snake
- sneaker
- snitch
- snook
- stalk
- steal
- stoolie
- tiptoe
- toad
- villain
- weasel
- worm
