It is possible to bear in mind the prefix non- means “not” by using the term nonpoisonous, for any compound that may be nonpoisonous is “not” poisonous. As an interjection to negate what was reported prior to or expose it as sarcasm, it is attested by 1900, popularized 1989 by https://baumwolltaschen20864.blogdeazar.com/27067831/the-taschen-diaries