maladroit
unskilled
all thumbs
awkward
bad job
blunderheaded
blunderheadedness
blundering
boggling
boorish
botch
botched
botchery
botching
botchy
bumbling
butterfingered
careless
carelessness
clownish
clumsy
clumsy-fisted
cumbersome
deficient
fingers all thumbs
fumbling
gauche
gawkish
gawky
graceless
half-assed
ham-fisted
ham-handed
haphazard
haphazardness
heavy-handed
hit-and-miss
hit-or-miss
hulking
hulky
inelegant
left-hand
left-handed
loose ends
loutish
lubberly
lumbering
lumpish
messiness