Simple past tense and past participle of nap.(verb)
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Use "napped" in a sentence
"And E napped, which is another reason she's an easier patient than M, who refuses to nap unless she passes out."
"I seem to have "napped" all afternoon, but never mind!!"
"Sandy Stewart "napped" stones on the road in his shirt sleeves, wet or fair, summer and winter, till he was persuaded to retire from active duty at eighty-five, and he spent ten years more in regetting his hastiness and criticising his successor."