English-Esperanto translations for efficient

making good, thorough, or careful use of resources; not consuming extra. Especially, making good use of time or energy
expressing the proportion of consumed energy that was successfully used in a process; the ratio of useful output to total input
causing effects, producing results; bringing into being; initiating change (rare except in philosophical and legal expression ''efficient cause'= causative factor or agent
effective
a cause; something that causes an effect

An efficient process would automate all the routine work
Our cleaners are almost too efficient: they throw away anything left out on a desk
The motor is only 20% efficient at that temperature
Ownership, maintenance, or use of the automobile need not be the direct and efficient cause of the injury sustained

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