English-Spanish translations for efficient

eficazTenemos un sistema sanitario eficaz. We have an efficient health system. Un mercado minorista más eficaz y más justo ( A more efficient and fairer retail market ( ¿Qué es lo que realmente significa eficaz? What does 'efficient' mean in plain language?
eficienteIncluso la Comisión ha sido eficiente. Even the Commission has been efficient. Energía: tecnologías eficientes; 2. Energy - efficient technologies; 2. Nuestro eficiente personal ya se ha ocupado de ello. Our efficient staff have already seen to that.

efectivoEs efectivo para el medio ambiente y para la economía. It is environmentally effective and economically efficient. El modelo forestal polaco es eficiente y efectivo. The Polish forestry model is efficient and effective. El empleo efectivo de esta ayuda depende de la eficiencia operativa de dichas instituciones. Effective use of this aid depends on the efficient operation of such institutions.

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

Dictionary