Uneconomical (adjective)

1. Not economical; not using resources in a cost-effective way.
2. Not being cost-effective or not providing good value for money.

Origin:

Mid 19th century: from un-1 + economical, on the pattern of words such as unproductive.

Examples:

1. The company's uneconomical business practices led to its downfall.
2. The car was uneconomical to run and was sold.
3. The uneconomical heating system was replaced with a more efficient one.
4. The uneconomical use of resources was causing a strain on the budget.
5. The uneconomical manufacturing process was causing a loss in profits.