"clumsy workmanship," 1660s, verbal noun from bungle (v.).
bungling (adj.)
"prone to bungle, clumsy, awkward," 1580s, present-participle adjective from bungle (v.). Related: Bunglingly.
a bungling workman
a bungling performance
bungalow
bungee
bung-hole
bungle
bungler
bungling
bunion
bunk
bunker
Bunker Hill
bunkum