thriftily

from WordNet (r) 3.0 (2006)

thriftily
    adv 1: in a thrifty manner; "a used towel that he had used and
           had left thriftily on the ledge below the mirror rather
           than consign to the linen basket"

from The Collaborative International Dictionary of English v.0.48

Thriftily \Thrift"i*ly\ (thr[i^]ft"[i^]*l[y^]), adv.
   1. In a thrifty manner.
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   2. Carefully; properly; becomingly. [Obs.]
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            A young clerk . . . in Latin thriftily them gret
            [greeted].                            --Chaucer.
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