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90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.
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the search for lower costs and greater efficiency
The inspectors were impressed by the speed and efficiency of the new system.
The new technology is aimed at improving efficiency and customer service.
This is the American English definition of efficiency. View British English definition of efficiency.