adj.不道德的；无原则的；放荡不羁的

He is totally unprincipled in money matters; you can't trust him. 他在金钱方面根本不讲道德，你不能相信他。

Unprincipled accommodation will do harm to him. 无原则的迁就对他有害。

In a few years his unprincipled wife warped the probity of a lifetime . 在以后的几年里,他那放荡不羁的老婆把他的生活搅了个一塌糊涂。