bun ‧ gle /ˈbʌŋɡ ə l/ BrE AmE verb [transitive]
[ Date: 1500-1600 ; Origin: Perhaps from a Scandinavian language ]
to fail to do something properly, because you have made stupid mistakes – used especially in news reports:
The whole police operation was bungled.
—bungled adjective :
a bungled rescue attempt
—bungle noun [countable]
—bungler noun [countable]