dummy
dum-my
noun
An artificial teat or soother for a baby to suck on.
"The baby dropped its dummy."
noun
An informal and derogatory term for a foolish or stupid person.
"Don't be such a dummy!"
noun
A life-sized model of a human, often used for display or testing.
"Shop window dummies wore new clothes."
Thesaurus
Synonyms: dummy up, silent person, booby, dumbbell, dope, pinhead, boob, unreal, artificial, blank, blank shell