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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.
|present participle||slackening off|
|past tense||slackened off|
|past participle||slackened off|
This is the British English definition of slacken off. View American English definition of slacken off.
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