Human experimentation refers to the practice of conducting tests, trials or research on humans, usually to determine the safety and efficacy of new drugs, vaccines, or medical procedures. Antonyms for human experimentation include ethical research, humane study, and responsible investigation. In ethical research, the safety, dignity, and well-being of participants are given top priority, and no harm is inflicted on them. Humane study refers to investigations that do not involve any form of torture, mutilation, or cruelty towards human beings, including the use of animals for experimentation purposes. Responsible investigation involves adhering to legal and ethical guidelines, and ensuring that the rights, privacy, and welfare of participants are respected and protected.