ament
ass
booby
born fool
bungler
clot
clown
congenital idiot
cretin
defective
dullard
dullhead
dumbbell
dummkopf
dummy
gaby
gander
gawk
gawky
geck
golem
goose
gothamist
gothamite
greenhorn
gull
gulpin
gump
half-wit
idiot
ignoramus
imbecile
innocent
jay
jobbernowl
juggins
lightheaded
mongoloid idiot
moron
natural
natural idiot
natural-born fool
nincompoop
ninny
ninnyhammer
noddy
noodle
simp
individual
mortal
person
somebody
someone
soul
airhead
boob
changeling
dimwit
dingbat
dolt
doofus
dope
fool
forgetful person
idiot savant
lame
muggins
nebbech
nebbish
nitwit
pillock
pinhead
poop
poor fish
pudden-head
pudding head
retard
sap
saphead
scatter-brain
schlemiel
schlep
schlepper
schnook
sheep
shlemiel
shlep
shlepper
shnook
space cadet
square
stupe
stupid
blockhead
blundering
boor
bumpkin
cad
churl
coot
coward
dunce
lout
mooncalf
oaf
poltroon
prig
sciolist
slob
tyro
weakling