Antonyms of adj principled

1 sense of principled

Sense 1
principled (vs. unprincipled) -- (based on or manifesting objectively defined standards of rightness or morality; "principled pragmatism and unprincipled expediency"; "a principled person")

unprincipled (vs. principled) -- (lacking principles or moral scruples; "freedom from coarse unprincipled calumny"- A.E.Stevenson)

Similarity of adj principled

1 sense of principled

Sense 1
principled (vs. unprincipled) -- (based on or manifesting objectively defined standards of rightness or morality; "principled pragmatism and unprincipled expediency"; "a principled person")
       => high-principled -- (having high principles)
          Also See-> scrupulous#1