(n.) One who, or that which, skulks.

dallier dawdle dawdler diddler dillydallier do-nothing dolittle doodler eye-servant faineant gentleman of leisure goldbrick goldbricker goof-off idler laggard lingerer loafer loiterer loller lotus-eater lounger lubber malingerer mope moper old soldier potterer putterer shirk shirker skulk skulker slacker slouch sloucher slug sluggard soldier stick-in-the-mud tax dodger time killer time waster trifler truant waiter on Providence welsher