using money, time, goods, etc.carefully and without waste
"an economic use of home heating oil"
"a modern economical heating system"
"an economical use of her time"
"economic growth"
"aspects of social, political, and economical life"
"an economical meal"
"an economical shopper"
"a frugal farmer"
"a frugal lunch"
"a sparing father and a spending son"
"sparing in their use of heat and light"
"stinting in bestowing gifts"
"thrifty because they remember the great Depression"
"`scotch' is used only informally"
She's economical (I call it mean) in her coal.
出自: R. Kipling
Then we can share a taxi, and be economical.
出自: T. S. Eliot
An economical way of providing online computer services.
出自:Minicomputer Forum