The Collaborative International Dictionary of English v.0.48:

Do-little \Do"-lit`tle\, n.
   One who performs little though professing much. [Colloq.]
   [1913 Webster]

         Great talkers are commonly dolittles.    --Bp.
                                                  Richardson.
   [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

38 Moby Thesaurus words for "dolittle":
   bum, clock watcher, dallier, dawdle, dawdler, diddler,
   dillydallier, do-nothing, doodler, faineant, gentleman of leisure,
   goldbrick, goldbricker, goof-off, idler, laggard, lazybones,
   lingerer, loafer, loiterer, loller, lotus-eater, lounger, lubber,
   mope, moper, potterer, putterer, slouch, sloucher, slug, slugabed,
   sluggard, stick-in-the-mud, time killer, time waster, trifler,
   waiter on Providence