繁征博引 fánzhēngbóyǐn to cite extensively Origin Definitions Defs Strokes Stroke Words Sentences Sents 繁 fán adjective numerous (bound form) numerous; abundant; manifold; in great numbers征 徵 zhēng to prove (literary) To verify or use as evidence; to prove.博引 bóyǐn to quote copiously To quote widely or extensively from many sources; to cite various references.