Simple past tense and past participle of join.(verb)
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Use "joined" in a sentence
"Big changes arrived in 2004, when the label joined with Starbucks to release"
"The party he joined is the same party that put the country into this mess that is being cleaned up and rather than join in the efforts he fled because he fared for his relection."
"The place where we are joined is a secret place for Hattie and me, especially since everyone always wants to look at it — a bone hinge covered in smooth skin, our spines locked together at the base."