Antonym: inefficient. Similar words: efficiency, sufficient, scientific, efficacy, official, officially, officious, ancient. Meaning: [-nt] 
adj. 1. being effective without wasting time or effort or expense 2. able to accomplish a purpose; functioning effectively.
adj. 1. being effective without wasting time or effort or expense 2. able to accomplish a purpose; functioning effectively. 
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(241) The seismic tomography technique is a efficient geophysical prospecting method.
(242) Features Halogen - free, suitable for highly efficient laser via formation for HDI.
(243) Efficient horticulture in the area is possible only under glass and with considerable inputs of energy.
(244) Engineering geophysics is economic, and efficient for seepage detection in dam body.
(245) With help from training simulators human operator can develop into a highly efficient guided missile controller.
(246) The tau fluvalinate is one kind of high efficient acaricides for honeybee.
(247) This suggests that a carbon tax would be more efficient than the current hotchpotch of policies.
(248) We can harness homegrown,(www.Sentencedict.com) alternative fuels like ethanol and spur the production of more fuel - efficient cars.
(249) The glyphosate is a weedicide which is efficient and low at hame and abroad.
(250) Making an efficient icebox was not as easy as we might now suppose.
(251) Transmission is less efficient to the mouth vs the genitals.
(252) Fulangci rolled out more efficient GIZA software to wrap at offering more complex statistic model 2003.
(253) All stainless steel body, iron griddle, high efficient heating and temperature control function.
(254) The herbivorous ornitho pod dinosaurs may have had a mammal like diaphragm for efficient respiration.
More similar words: efficiency, sufficient, scientific, efficacy, official, officially, officious, ancient, scientist, office, officer, science, head office, difficult, deficit, artificial, diffident, client, lenient, patient, nutrient, enticing, transient, recipient, ingredient, orientation, identification, entertainment, sentiment, effort.