eth‧i‧cal [no comparative]
relating to principles of what is right and wrong [= moral]
The use of animals in scientific tests raises difficult ethical questions.
The president must have the highest ethical standards.
morally good or correct [≠ unethical]: ➔ unethical
I don't think it's ethical for you to accept a job you know you can't do.
ethical investment policies (=investing only in businesses that are considered morally acceptable)