bungle
Concise Oxford English Dictionary © 2008 Oxford University Press:
bungle/ˈbʌŋɡl/
▶verb carry out (a task) clumsily or incompetently.
■ (as adj. bungling) prone to making mistakes.
▶noun a mistake or failure.– derivatives
bungler noun.
bungler noun.
'bungle' also found in these Oxford entries:

