The Collaborative International Dictionary of English v.0.48:
Frugally \Fru"gal*ly\, adv. Thriftily; prudently. [1913 Webster]WordNet (r) 3.0 (2006):
frugally adv 1: in a frugal manner; "in villages, the new pipeline marks the end of water as a precious liquid, to be dispensed frugally, weighed out drop by drop"