True definition.

Thanks to Miguel Cones for the following:
(And yes, we agree "“dilly-dallier" is the best synonym.)

mope ( P ) moped, mop·ing,\n mopes \n \n \n \n

To be gloomy or dejected. \n To brood or sulk.
. \n \n To move in a leisurely or aimless manner;\n dawdle. \n A person given to gloomy or dejected moods. \n mopes Low\n spirits; the blues. Often used with the. intr.v. moped, mop·ing, mopes To be gloomy or dejected. To brood or sulk. To move in a leisurely or aimless manner; dawdle. n. A person given to gloomy or dejected moods. mopes Low spirits; the blues. Often used with the.
dillydallier, dilly-dallier,\nlounger] v 1:\nmove around slowly and aimlessly [syn: mope around]\n2: be apathetic, gloomy, or dazed [syn: ",1]

Source: The American Heritage® Dictionary of the English Language, Fourth EditionCopyright © 2000 by Houghton Mifflin Company.Published by Houghton Mifflin Company. All rights reserved.