Main entry: unprincipled
Definition: lacking principles or moral scruples
Usage: freedom from coarse unprincipled calumny- A.E.Stevenson
Antonyms: principled
Definition: based on or manifesting objectively defined standards of rightness or morality
Main entry: unprincipled
Definition: having little or no integrity
Antonyms: honorable, honourable
Definition: worthy of being honored; entitled to honor and respect