His association with corrupt businessmen damaged his reputation.

corrupt 是形容词，由前缀 cor-（表示"完全"）和词根 rupt（来自拉丁语 rumpere，意为"打破"）组成，字面意思是"完全破坏的"，引申为"腐败的、堕落的"，指道德败坏或行为不端。