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unfriend

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verb [transitive] British English pronunciation: unfriend /ʌnˈfrend/ 
Word Forms
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present tense
I/you/we/theyunfriend
he/she/itunfriends
present participleunfriending
past tenseunfriended
past participleunfriended
 
Word story
Although unfriend has been widely used since the early 2000s, thanks to the rise of social media, the word is in fact much older: the earliest recorded use of it is in a letter by the English writer Thomas Fuller, published in 1659.
 

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