The Collaborative International Dictionary of English v.0.48:
Loiter \Loi"ter\, v. i. [imp. & p. p. Loitered; p. pr. & vb.
n. Loitering.] [D. leuteren to delay, loiter; cf; Prov. G.
lottern to be louse, lotter louse, slack, unsettled, vagrant,
1. To be slow in moving; to delay; to linger; to be dilatory;
to spend time idly; to saunter; to lag behind.
Sir John, you loiter here too long. --Shak.
If we have loitered, let us quicken our pace.
2. To wander as an idle vagrant. [Obs.] --Spenser.
Syn: To linger; delay; lag; saunter; tarry.
Moby Thesaurus II by Grady Ward, 1.0:
59 Moby Thesaurus words for "loitering":
Micawberish, backward, coquetry, dabbling, dalliance, dallying,
dawdling, delaying, dilatoriness, dilatory, dillydallying,
dolce far niente, dragging, easygoing, fiddling, flirtation,
fooling, fooling around, foot-dragging, goofing off, idling,
jerking off, kidding around, lackadaisical, lag, laggard, lagging,
lax, lazing, lazy, lingering, loafing, lolling, lollygagging,
lounging, messing around, monkeying, monkeying around, mopery,
piddling, playing, playing around, pottering, procrastinating,
procrastination, procrastinative, procrastinatory, puttering,
remiss, shilly-shallying, shuffling, slack, slow, sluggish,
smattering, tarrying, tinkering, toying, trifling