"Wasteful expenditure" means spending money on things that are unnecessary, excessive, or not useful, resulting in a loss of resources. Full definition
The Committee on Oversight and Government Reform called the hearing to evaluate steps taken by the Obama administration to curtail wasteful expenditure on travel. (sciencemag.org)
According to the group in a statement signed by the Executive Directors, Nii Tettey Tetteh and Charles Kwadade, it said, «Relocation of GNPC [headquarters] will lead to wasteful expenditure where there will be huge cost incurred. (ghanapoliticsonline.com)
Avoid wasteful expenditure and impulse buying on non-essential items, as it leads to unnecessary spending and lesser savings at the end of the month for essential expenses. (policybazaar.com)