The antonyms for the phrase "more uneconomical" are "more economical," "cost-effective," "thrifty," "frugal," "saving," "affordable," "prudent," "reasonable," "efficient," and "budget-friendly." These words have the opposite meaning of "more uneconomical," which refers to a situation where resources are wasted, expenses are high, and productivity is low. By being more economical and cost-effective, individuals and businesses can save money and resources, increase profitability, and improve performance. Being thrifty and frugal helps in conserving resources and avoiding wastage. Being budget-friendly means that a product or service is affordable, reasonable, and practical for people to use or buy.