deleteriousglossary / DELETERIOUS deleterious (del-[schwa]-teer-ee-[schwa]s), adj.1. Poisonous (deleterious toxins).2. Unwholesome; psychologically or physically harmful (deleterious influence). 词条贡献者 双语律师Denise,知名法学院国际私法专业,擅长翻译各类与国际争议解决相关的法律文件。