"dummy" in the noun sense
1. dummy, silent person
a person who does not talk
2. dumbbell, dummy, dope, boob, booby, pinhead
an ignorant or foolish person
3. dummy
a figure representing the human form
4. blank, dummy, blank shell
a cartridge containing an explosive charge but no bullet
"dummy" in the verb sense
1. dummy, dummy up
make a dummy of
"dummy up the books that are to be published"
"dummy" in the adjective sense
1. dummy
having the appearance of being real but lacking capacity to function
"a dummy corporation"
Source: WordNet® (An amazing lexical database of English)
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