Source : Webster's Revised Unabridged Dictionary (1913)

Lazy \La"zy\, a. [Compar. {Lazier}; superl. {Laziest}.] [OE.
   lasie, laesic, of uncertain origin; cf. F. las tired, L.
   lassus, akin to E. late; or cf. LG. losig, lesig.]
   1. Disinclined to action or exertion; averse to labor; idle;
      shirking work. --Bacon.

   2. Inactive; slothful; slow; sluggish; as, a lazy stream.
      ``The night owl's lazy flight.'' --Shak.

   3. Wicked; vicious. [Obs. or Prov. Eng.] --B. Jonson.

Source : WordNet®

lazy
     adj 1: moving slowly and gently; "up a lazy river"; "lazy white
            clouds"; "at a lazy pace"
     2: disinclined to work or exertion; "faineant kings under whose
        rule the country languished"; "an indolent hanger-on";
        "too lazy to wash the dishes"; "shiftless idle youth";
        "slothful employees"; "the unemployed are not necessarily
        work-shy" [syn: {faineant}, {indolent}, {otiose}, {slothful},
         {work-shy}]
     [also: {laziest}, {lazier}]

laziest
     See {lazy}