Synonyms of unprincipled in English:

unprincipled

adjective

  • he is an unprincipled opportunist
    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
    [Antonyms] principled, ethical
  • Definition of unprincipled in:

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