mishandle
noun
Definitions
Rough manipulation which causes physical damage.
Ineffective or incorrect deal.
Improper, wrong, or bad usage or treatment; abuse.
verb
Definitions
To manipulate something roughly, causing physical damage.
Example: If you mishandle a fragile package, the contents may break.
To deal with a situation incorrectly or ineffectively; to make a mistake in handling a situation.
Example: The prime minister was accused of mishandling the diplomatic crisis.