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will have believed

  • future perfect
    of believe.
    believe
    verb (used without object)
    to have confidence in the truth, the existence, or the reliability of something, although without absolute proof that one is right in doing so.

Example Sentences

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“A lot of musicians will have believed that there would be some sort of musicians’ passport arrangement.

From The Guardian Oct. 6, 2018

My dear T. X.," it began, "I do not doubt that this letter will give you a little shock, because most of my friends will have believed that I am gone beyond return.

From The Clue of the Twisted Candle by Edgar Wallace