水火不容 shuǐhuǒbùróng completely incompatible Origin Definitions Defs Strokes Stroke Words Sentences Sents 水火 shuǐhuǒ noun extremes metaphorical for things that are completely opposite or incompatible like water and fire不容 bùróng verb to not allow To not permit, brook, or allow; to be impermissible or out of the question.