unprincipled
/ʌnˈprɪnsɪp(ə)ld
/adjective
(Of a person or their behaviour) not acting in accordance with moral principles: an unprincipled womanizer...
- You are completely unprincipled and have no interest whatsoever in morals, justice or fairness of any kind.
- The unprincipled behaviour of the Bush administration has been met with principled conduct and objections.
- There could hardly be a more graphic illustration of how putting power in the hands of unprincipled people can bring a community down, if it yields to such pressure.
Synonyms
immoral, unethical, unscrupulous, amoral, dishonourable, reprobate, dishonest, unprofessional, deceitful, devious, corrupt, corrupted, dissolute, underhand, crooked, bad, wicked, evil, villainous, roguish, shameless, sinful, ignoble, base, low, degenerate, sordid
archaic dastardly