immeasurable (adj.)youdaoicibaDictYouDict[immeasurable 词源字典]
mid-15c., from im- + measurable. It could alternate with immensurable (1530s), from French, from Late Latin immensurabilis, from assimilated form of in- "not" + mensurabilis "able to be measured," from mensurare "to measure." Related: Immeasurably.[immeasurable etymology, immeasurable origin, 英语词源]