He acted wrongly and without scruple.
他做了错事毫不内疚.
《简明英汉词典》
He will do anything without scruple.
他任何(恶)事都做得出来.
辞典例句
She will tell lies without scruple.
她会肆无忌惮地说谎.
互联网
He tells lies without scruple.
他毫无顾忌地说谎.
互联网
Be ware, be ware! he'll cheat it without scruple, who can without fear.
当心, 当心! 行骗而无所畏惧者, 也将无所顾虑.
互联网