unprofitable (adjective)

1. The box office report revealed that the film was unprofitable, failing to attract a large audience.

2. The ancient myth about a cursed treasure proved to be unprofitable for those who dared to seek it.

3. The decision to include luxurious but unprofitable materials in the building design caused a significant increase in construction costs.

4. Despite their intense love for each other, their long-distance relationship proved to be unprofitable, leading to constant heartache and sadness.