From Late Middle Englishimmaculat, immaculate(“blameless; flawless, spotless; specifically of the Virgin Mary: pure, undefiled”),[1] borrowed from Latinimmaculātus(“unstained”), from im-(negative prefix) + maculātus(“stained, spotted; defiled, polluted; (figurative) dishonoured”),[2] the perfectpassiveparticiple of maculō(“to spot, stain; to defile, pollute; (figurative) to dishonour”), from macula(“a blemish, spot, stain; (figurative) blot on one’s character, fault”), ultimately from Proto-Indo-European*smh₂-tló-m(“wiping (?)”), from *smeh₁-(“to rub; to smear”). The word displaced Middle Englishunwemmed(“pure, untainted”). See also -ate(adjective-forming suffix).
O loyall Father, of a treacherous Sonne, / Thou ſheere immaculate and ſiluer Fountaine, / From vvhence this ſtreame, through muddy paſſages, / Hath held his current, and defild himſelfe.
p.1597, J[ohn] Donne, “Satyre IIII”, in Poems, […] with Elegies on the Authors Death, London: […] M[iles] F[lesher] for Iohn Marriot,[…], published 1633, →OCLC, page 344:
So in immaculate clothes, and Symetrie / Perfect as circles, vvith ſuch nicetie / As a young Preacher at his firſt time goes / To preach, he enters, […]
So firſt to preach a vvhite-glov'd Chaplain goes, / VVith Band of Lily, and vvith Cheek of Roſe, / Svveeter than Sharon, in immaculate trim, / Neatneſs itſelf impertinent in him.
Every rustle of her silvery silk gown, every fold of the snowy kerchief on her neck, every plait of her immaculate cap, spoke a soul long retired from this world and its cares.
Were but my ſoul as pure / From other guilts as that, Heaven did not hold / One more immaculate.
1653, Henry More, “The Defence of the Threefold Cabbala. The Defence of the Moral Cabbala. Chapter III.”, in A Collection of Several Philosophical Writings of Dr Henry More[…], London: […] James Flesher for William Morden,[…], published 1662, →OCLC, page 177:
And this Life is pure and immaculate Love, and this Love is God, as he is communicable unto man, and is the ſole Life and Eſſence of Vertue truly ſo called; […]
That immaculate manliness we feel within ourselves, so far within us, that it remains intact though all the outer character seem gone; bleeds with keenest anguish at the undraped spectacle of a valor-ruined man.