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economical
[ˌɛkə'nɑmɪkəɫ]
an economical meal
an economical shopper
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frugal
['frugəɫ]
a frugal farmer
a frugal lunch
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scotch
['skɑtʃ]
'scotch' is used only informally
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sparing
['spɛrɪŋ]
sparing in their use of heat and light
a sparing father and a spending son
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stinting
stinting in bestowing gifts