has been blackening
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present perfect progressiveof blacken (3rd person singular).present perfect progressive
Used to describe an action that began in the past, has continued continuously, and is still in progress.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
“Who has been blackening my name to you?”
From Wee Wifie by Rosa Nouchette Carey
He, then, through this agency, has been blackening your columns with his iron hoof.
From A Vindication of the Seventh-Day Sabbath and the Commandments of God With a Further History of God's Peculiar People from 1847-1848 by Joseph Bates