WordNet (r) 3.0 (2006):

lollygag
    v 1: be about; "The high school students like to loiter in the
         Central Square"; "Who is this man that is hanging around
         the department?" [syn: loiter, lounge, footle,
         lollygag, loaf, lallygag, hang around, mess
         about, tarry, linger, lurk, mill about, mill
         around]

Moby Thesaurus II by Grady Ward, 1.0:

33 Moby Thesaurus words for "lollygag":
   bill and coo, copulate, dally, dawdle, delay, diddle, dillydally,
   doodle, drag, falter, flag, goof off, halt, lag, linger, loiter,
   make love, make out, neck, pet, piddle, poke, shilly-shally,
   smooch, spoon, sweet-talk, tarry, toy, trail, trifle, wanton,
   waste time, whisper sweet nothings