Self-directing freedom and especially moral independence. An ethical principle holds that the autonomy of persons ought to be respected. (Bioethics Thesaurus)

The quality or state of being independent and self-directing, especially in making decisions, enabling professionals to exercise judgment as they see fit during the performance of their jobs.

Interference with the FREEDOM or PERSONAL AUTONOMY of another person, with justifications referring to the promotion of the person's good or the prevention of harm to the person. (from Cambridge Dictionary of Philosophy, 1995); more generally, not allowing a person to make decisions on his or her own behalf.