His reckless decisions shipwrecked the company's reputation.

shipwrecked 是动词 shipwreck 的过去式。shipwreck 由 ship（船）和 wreck（毁坏、失事）组成，字面意思是"船只失事"，引申为"彻底毁坏、使毁灭"。在句中比喻公司的声誉像遭遇海难的船只一样被彻底摧毁。