There are several synonyms that can be used to express "not economically" in different contexts. Some of the most common ones include unprofitable, loss-making, uneconomical, wasteful, impractical and nonviable. When applied to businesses or investments, these terms convey a lack of financial feasibility or profitability. In other cases, the phrase "not economically" may be used to describe situations or activities that are costly, imprudent, or inefficient. Synonyms such as extravagantly, wantonly, or profligately may be more appropriate in these cases. Overall, choosing the right synonym for "not economically" depends largely on the context and intended meaning of the sentence or passage.