1. dealt with or managed badly or incorrectly
Usage: past tense and past participle of mishandle
2. treated roughly or carelessly with the hands
Usage: past tense and past participle of mishandle

Examples

• The crisis was mishandled by the government officials.
• She mishandled the delicate equipment and broke it.
• The coach mishandled the situation with the star player.
• The fragile packages were mishandled during shipping.
• He felt the company had mishandled his complaint.
• The ancient artifacts were mishandled by careless workers.
• The negotiations were completely mishandled from the start.