lacking moral principles; unwilling to adhere to proper rules of conduct.
not in accord with the standards of a profession: She treated patients outside the area of her training, and the appropriate medical organization punished her unethical behavior.
Origin of unethical
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
not ethical; impropercompanies involved in unethical practices
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
Online Etymology Dictionary, © 2010 Douglas Harper