コストコストCommon wordJLPTN2Freq.FrequencyTop 5,000Meanings1nouncost; expenseCommon loanword for monetary cost, price, or expense. Used in business and everyday contexts.このプロジェクトのコストは予よ想そう以い上じょうに高たかい。The cost of this project is higher than expected.コスト削さく減げんのために新あたらしいシステム