根究 gēnjiū investigate Origin Definitions Defs Strokes Stroke Words Sentences Sents 追根究底 zhuīgēnjiūdǐ probe to get to the heart of the matter归根究底 guīgēnjiūdǐ ultimately in the final analysis盘根究底 pángēnjiūdǐ investigate To get to the bottom of something; to investigate thoroughly.