Word Origin & History
immaculatec.1430, "free from mental or moral pollution, pure," from a fig. use of L. immaculatus "unstained," from in- "not" + maculatus "spotted, defiled," pp. of maculare "to spot," from macula "spot, blemish." The literal sense of "spotlessly clean or neat" is first attested 1735. Immaculate Conception is 1497,
from M.Fr. conception immaculée; declared to be an article of faith in 1854.