► 副詞
てきぱき [(1)てきぱき] meaning: efficient rank: 3
☆ あそこの店の店員はてきぱきしていて気持ち良い ⇨ The clerk of that store is very efficient and refreshing
☆ 彼女はてきぱきと夕食の準備をした ⇨ She efficiently prepared dinner (☛ Get things done efficiently and competently)
► 名詞
効率 [こうりつ] meaning: efficient rank: 2
☆ このやり方は効率が良くない ⇨ This method is not efficient
☆ 燃焼効率を高めたエンジン ⇨ An engine with improved combustion efficiency
能率 [のうりつ] meaning: efficient rank: 2
☆ こう暑いと仕事の能率が上がらない ⇨ It is too hot I can raise my work efficiency, I can’t work efficiently (☛ Typically about human performance)
☆ このやり方は能率が悪い ⇨ This method is not efficient (☛ Typically about human performance)
合理化 [ごうりか] meaning: efficient rank: 3
☆ 会社は常に生産の合理化を追求している ⇨ The company is always pursuing to streamline its production
► 形容動詞
効率的 [こうりつてき] meaning: efficient rank: 2
☆ それは余り効率的なやり方ではない ⇨ That is not a very efficient method