To act or work in a clumsy, awkward manner.

To make or mend clumsily; to manage awkwardly; to botch; -- sometimes with up.

A clumsy or awkward performance; a botch; a gross blunder.

make a mess of, destroy or ruin; "I botched the dinner and we had to eat out"; "the pianist screwed up the difficult passage in the second movement"

spoil by behaving clumsily or foolishly; "I bungled it!"

v. To execute clumsily.