Source : Webster's Revised Unabridged Dictionary (1913)

Sparing \Spar"ing\, a.
   Spare; saving; frugal; merciful. --Bacon. -- {Spar"ing*ly},
   adv. -- {Spar"ing*ness}, n.

Source : WordNet®

sparingly
     adv : to a meager degree or in a meager manner; "these voices are
           meagerly represented at the conference"; "the area is
           slenderly endowed with natural resources" [syn: {meagerly},
            {slenderly}, {meagrely}] [ant: {amply}, {amply}]