dumdum
1 of 2noun (1)
dum·dum ˈdəm-ˌdəm 
: a bullet (such as one with a hollow point) that expands more than usual upon hitting an object
dum-dum
2 of 2noun (2)
ˈdəm-ˌdəm
: a stupid person : dummy
Synonyms
Noun (2)
- airhead
- birdbrain
- blockhead
- bonehead
- bubblehead
- chowderhead
- chucklehead
- clodpoll
- clodpole
- clot [British]
- cluck
- clunk
- cretin
- cuddy [British dialect]
- cuddie
- deadhead
- dim bulb [slang]
- dimwit
- dip
- dodo
- dolt
- donkey
- doofus [slang]
- dope
- dork [slang]
- dullard
- dumbbell
- dumbhead
- dummkopf
- dummy
- dunce
- dunderhead
- fathead
- gander
- golem
- goof
- goon
- half-wit
- hammerhead
- hardhead
- idiot
- ignoramus
- imbecile
- jackass
- know-nothing
- knucklehead
- lamebrain
- loggerhead [chiefly dialect]
- loon
- lump
- lunkhead
- meathead
- mome [archaic]
- moron
- mug [chiefly British]
- mutt
- natural
- nimrod [slang]
- nincompoop
- ninny
- ninnyhammer
- nit [chiefly British]
- nitwit
- noddy
- noodle
- numskull
- numbskull
- oaf
- pinhead
- prat [British]
- ratbag [chiefly Australian]
- saphead
- schlub [slang]
- shlub
- schnook [slang]
- simpleton
- stock
- stupe
- stupid
- thickhead
- turkey
- woodenhead
- yahoo
- yo-yo
See all Synonyms & Antonyms 
Word History
Etymology
Noun (1)
Dum Dum, arsenal near Calcutta, India
Noun (2)
reduplication of dumb entry 1
First Known Use
Noun (1)
circa 1889, in the meaning defined above
Noun (2)
1928, in the meaning defined above