Financially inefficient, costly, wasteful, or loss making(adjective)
Wiktionary.org : Text is available under the Creative Commons Attribution-ShareAlike License
Use "uneconomic" in a sentence
"Some would result from the ability of a number of foreign companies, currently forced by the tariff to maintain uneconomic manufacturing facilities here, to close down their plants, leaving the remainder far better placed to achieve competitive production."
"He believed the terms uneconomic and therefore unsound, but it was worth taking a chance on interpretation, a desperate venture perhaps, but anything to stop the blare and bicker of the council table and start the work of reconstruction."
"All farms rated below £4, and a large number of those below £15, may be regarded as "uneconomic" -- that is, incapable by themselves of supplying"