Simple past tense and past participle of drift.(verb)
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Use "drifted" in a sentence
"The sound of my name drifted off, and then, I was asleep."
"Well Michael Cera was in Youth in Revolt which drifted from the source material a bit, but primarily it honored it and I thought it was an amazing adaptation."
"I am sorry to say this, but history says this happened under President Bush's watch; history says that he drifted from the true focus point of where we needed to be."