infallible: may imply that one's freedom from error is divinely bestowed: fundamentalists believe in an ~ Bible.


inerrable: may be preferable when one wishes to avoid any association with religious or papal infallibility: no reference source should be considered ~.


inerrant: stresses the fact that no mistakes were made: an ~ interpretation of the most demanding role in drama.


unerring: stresses reliability, sureness, exactness, or accuracy: a photographer with an ~ eye for beauty.   (exact严格一致或严格遵守implies a very strict agreement with fact, standard, or truth，如a suit tailored to exact measurement一件裁剪准确(严格)的衣服)  



infallible永无错误: 表示这种永不犯错的性质是神所赋予的，inerrable永无错误: 希望避免上个词和宗教教皇的关联时，使用该词，inerrant没有错误: 强调没有错误的事实，unerring准确可靠: 强调可靠把握严格准确


记忆方法: 1）首字母IIIU你我凡人<==谁能无错

         2）无错的意思是不会犯错mean having or showing the inability to make errors.