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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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John went out and locked the door behind him.
Have you locked the car?
She locked the documents in the safe.
The brakes locked and the car spun off the road.
This is the American English definition of lock. View British English definition of lock.
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