Before revision: Etymology and usage The term nocebo (Latin , 'I shall harm', from , 'I harm') was coined by Walter Kennedy in 1961 to denote the counterpart to the use of placebo (Latin , 'I shall please', from , 'I please') a substance that may produce a beneficial, healthful, pleasant, or desirable effect ) .
After revision: Etymology and usage The term nocebo (Latin , 'I shall harm', from , 'I harm', was coined by Walter Kennedy in 1961 to denote the counterpart to the use of placebo (Latin , 'I shall please', from , 'I please') a substance that may produce a beneficial, healthful, pleasant, or desirable effect ) .