Simple past tense and past participle of swop.(verb)
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Use "swopped" in a sentence
"Her owner "swopped" her for an old Martini, the triumphant Padre married them and received him back to the bosom of Mother Church."
"It was for the first six I was to be "swopped," or rather had already been, for the bargain was concluded and the blacks were being delivered over to form part of the slaver's cargo."
"The system originally came with a 8800GT but we swopped this out with a 8800GTX that we had floating around."