sparingly

from WordNet (r) 3.0 (2006)

sparingly
    adv 1: 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}, {sparingly}, {slenderly}, {meagrely}] [ant:
           {amply}, {fully}, {richly}]

from The Collaborative International Dictionary of English v.0.48

Sparing \Spar"ing\, a.
   Spare; saving; frugal; merciful. --Bacon.
   [1913 Webster] -- {Spar"ing*ly}, adv. -- {Spar"ing*ness}, n.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

23 Moby Thesaurus words for "sparingly":
      cannily, carefully, charily, economically, frugally, husbandly,
      in moderation, meagerly, moderately, poorly, providently,
      prudently, punily, scantily, slightly, sparely, sparsely,
      stintingly, temperately, thin, thriftily, within bounds,
      within compass

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