v feel about uncertainly or blindlyv make one's way clumsily or blindlyv handle clumsilyv make a mess of, destroy or ruinv drop or juggle or fail to play cleanly a grounder
v. （笨拙地）摸索或处理（某事物）( fumble的过去式和过去分词 ); 乱摸, 笨拙地弄; 使落下