- wasteful waste‧ful [ˈweɪstfl] adjectiveusing things such as money, materials or energy in a way that is not sensible or effective:
• Local government is seen as slow, wasteful, and incompetent.
* * *wasteful UK US /ˈweɪstfəl/ adjective► not being careful about the amount of resources used for something: »
Top business advisers have been brought in to identify areas of wasteful government spending.
Financial and business terms. 2012.