inefficiently
🇺🇸
/ˌɪnɪˈfɪʃntli/
🇬🇧
/ˌɪnɪˈfɪʃntli/
not in a way that makes the best use of time, money, energy, etc.
The workers were producing goods inefficiently, which led to increased costs for the company.
労働者が無駄な方法で製品を製造していたため、会社のコストが増加しました。