Uneconomic (adjective)

Not cost-effective or financially sound.

Origin:

From the prefix un- meaning not and the word economic.

Examples:

1. The project was deemed uneconomic and was scrapped.
2. The company was facing uneconomic losses.
3. The investment was uneconomic and was not pursued.
4. The proposal was uneconomic and was not accepted.
5. The plan was uneconomic and was not implemented.