To damage; injure.
To manhandle; beat up; rough up.
To make a mess of; to untidy, disorder, soil, or muss.
To botch, bungle; to perform poorly on.
To cause a problem with; to introduce an error or mistake in; to make muddled or confused; spoil; ruin.
To cause (another person) to make unwanted mistakes in a given task, usually through distraction or obnoxious behavior.
To make a mistake; to do something incorrectly; to perform poorly.
To discombobulate, utterly confuse, or confound psychologically; to throw into a state of mental disarray.
To deliberately destroy or damage something in order to prevent it from being successful.
A deliberate action aimed at weakening someone (or something, a nation, etc) or preventing them from being successful, through subversion, obstruction, disruption, and/or destruction.