Placed in a casket, especially a coffin used for burial; the past tense of casket when used as a verb.
From casket, which comes from Old French cassette (little box), derived from casse. Used as a verb in funeral contexts since the 19th century.
The verb 'to casket' emerged around the Victorian era when funeral terminology became increasingly euphemistic — people couldn't say 'buried' directly anymore, so they said 'casketed.'
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