bungler
noun
[ ˈbʌŋɡlə ]
• a person who habitually bungles things; an amateur.
• "the government is evidently a bunch of bunglers"
Similar:
blunderer,
incompetent,
amateur,
bumbler,
botcher,
clown,
hopeless case,
mutt,
butterfingers,
bodger,
prat,
jackleg,
spud,
lurdan,
shower,