mishandle

[1]	abuse , botch , bodge , mistreat , maltreat , bumble , fumble , ill-treat , beat (up) , botch up , muff , brutalize , maul , blow , flub , molest , injure , screw up , ball up , hurt , harm , spoil , muck up , handle/treat roughly , manhandle , bungle , fluff , (Colloq) knock about/around , bollix , bollix up , bollocks , bollocks up , bobble , louse up , foul up , mess up , fuck up
[2]	mismanage , mismanage , bungle , misconduct , botch , misconduct , mangle , mess up , muddle , wreck , ruin , destroy , (Colloq) muff , make a mess/hash of , (Slang) screw up , bugger up , (Colloq) fuck up