bad job
balk
be all thumbs
bevue
blooper
blunder
blunder away
blunder into
blunder on
blunder upon
bobble
boggle
bonehead play
boner
boo-boo
botch
bumble
bungle
butcher
clumsy performance
commit a gaffe
error
etourderie
false move
false step
faux pas
flounder
flub
fluff
foozle
fumble
gaucherie
hash
inadvertence
inadvertency
lapse
lapsus calami
lapsus linguae
loose thread
lumber
make a miscue
make a mistake
mar
mess
misapprehend
misconceive
misidentify
misinterpret
misstep
mistake
shot
stroke
miscued
miscues
miscuing
Eucharist
backfield
convincingness
counterair
countermeasure
death rate
death-roll
fieldwork
lineman
objurgation
outwork
popgun
rebounder
sombreness
stoniness
sysop
tosh
unlikeness
warding