adj. eficiente, de buen rendimiento, despachado, eficaz

eficaz

Eficiente

Efficient Consumer Response
respuesta efectiva del consumido

con buena relación coste-beneficio, con buena relación costo-beneficio

aprovechado

(adj.) = eficiente, eficaz.
Ex: It permits efficient searching without scanning the full text file sequentially.
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* be efficient at + Gerundio = ser eficaz para + Infinitivo.
* cost-efficient [cost efficient] = económico, rentable.
* energy efficient = eficaz desde un punto de vista energético.
* inefficient = ineficaz.
* non-efficient = ineficaz, poco eficaz.
* super-efficient = supereficaz.
* time efficient [time-efficient] = usando el tiempo de un modo eficaz.

adj. effective, done without waste (of time, resources, etc.)

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Adjective
1. being effective without wasting time or effort or expense; "an efficient production manager"; "efficient engines save gas"
(antonym) inefficient
(similar) businesslike
(see-also) competent
2. able to accomplish a purpose; functioning effectively; "people who will do nothing unless they get something out of it for themselves are often highly effective persons..."-G.B.Shaw; "effective personnel"; "an efficient secretary"; "the efficient cause of the revolution"
(synonym) effective
(similar) competent

adj. operative, in working order; efficient

adj. efficient, effective, done without waste (of time, resources, etc.)