"Coffined" is a word used to describe someone or something that has been placed in a coffin. There are several synonyms that can be used in its place. One option is "interred," which means to bury a person or thing. Another option is "entombed," which specifically refers to placing a body or object in a tomb. "Inhumed" is another synonym that means to bury something, often referring to a person's remains. "Laid to rest" is a common phrase used in place of "coffined" and refers specifically to someone who has died and been buried. Other synonyms for "coffined" include "sepulchered," "buried," and "laid in the ground".