expression, i-adjective
economical; efficient; lean; compact
Describes something without waste, unnecessary elements, or inefficiency; often used for processes, designs, writing, or movements.
彼の説明は無駄のない、わかりやすいものだった。
His explanation was concise and easy to understand, without any waste.
この機械は無駄のない設計で
This machine has an efficient design and consumes little energy.
効率的 focuses on high efficiency in achieving a goal, while 無駄のない emphasizes the absence of waste or excess.
簡潔 means 'concise' and is used mainly for speech or writing; 無駄のない can apply to a broader range of things, including processes and designs.
Phrase composed of 無駄 (waste, futility) + の (possessive particle) + ない (negative form of ある), literally 'without waste'.