unprincipled

英 [ʌn'prɪnsɪp(ə)ld] 美[ʌn'prɪnsəpld]

• adj. 无原则的；不道德的，不正直的；不合人道的

1. lacking principles or moral scruples;

"freedom from coarse unprincipled calumny"- A.E.Stevenson

2. having little or no integrity