來歷不明 Save Sign in to save words Simplified: 来历不明 láilìbùmíng ㄌㄞˊ ㄌㄧˋ ㄅㄨˋ ㄇㄧㄥˊ of unknown origin of dubious background idiom Character by character 來(lái)come 歷(lì)experience 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