形容詞 unscrupulous:

1. without scruples or principles

1. Any system of taxation lends itself to manipulation by clever or unscrupulous men.
   任何稅收制度都有可能被那些狡猾詭詐的人或無恥之徒鉆空子。
2. An unscrupulous, dishonest person; a scoundrel.
   流氓，無賴不守法，不誠實之人; 惡棍
3. He once did me such an unscrupulous shot in the eye.
   他曾經如此肆無忌憚地惡意中傷過我。
4. He was utterly unscrupulous in his competition with rival firms.
   他與對立公司競爭完全不講道德。