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 keep safe; to defend; to guard; to prevent harm coming to.
To book a passenger on a later flight if there is a chance they will not be able to board their earlier reserved flight.