详细解释:a. 妄自尊大的
英语解释：
动词 bumble:
make a mess of, destroy or ruin同义词：botch, bodge, bumble, fumble, botch up, muff, blow, flub, screw up, ball up, spoil, muck up, bungle, fluff, bollix, bollix up, bollocks, bollocks up, bobble, mishandle, louse up, foul up, mess up, fuck up