dummy

(noun) a person who does not talk. Synonyms: silent person.

(noun) an ignorant or foolish person. Synonyms: dumbbell, dope, boob, booby, pinhead.

(noun) a figure representing the human form.

(noun) a cartridge containing an explosive charge but no bullet. Synonyms: blank, blank shell.

(verb) make a dummy of. Synonyms: dummy up. Examples: "Dummy up the books that are to be published."

(adj) having the appearance of being real but lacking capacity to function. Examples: "A dummy corporation."