来历不明 Save Sign in to save words Traditional (Taiwan): 來歷不明 láilìbùmíng ㄌㄞˊ ㄌㄧˋ ㄅㄨˋ ㄇㄧㄥˊ of unknown origin of dubious background idiom Character by character 来(lái)come 历(lì)calendar 不(bù)no 明(míng)Ming Dynasty A Chinese word or character, or English Search Sources CC-CEDICT, CC BY-SA 4.0 pinyinjs, Apache-2.0