a. and sb. ? Obs. Also 7 stupi-. [a. F. stupéfactif, -ive adj. (16th c.), ad. med.L. stupefactīv-us, f. L. stupefact-, ppl. stem of stupefacĕre: see STUPEFY v. and -IVE.]
A. adj. 1. Med. Having the property of producing stupor or insensibility.
1527. Andrew, Brunswykes Distyll. Waters, c j b. The water of Nenufara floure is half poyson or venym thrughe his great coldenes or stupefactyfe.
1543. Traheron, Vigos Chirurg., Interpret. Words, Stupefactiue: That, that hathe strength to astoynie, and take awaye felynge.
1626. Bacon, Sylva, § 98. Opium hath a Stupefactiue Part, and a Heating Part.
1649. E. Reynolds, Hosea, iii. 14. Some affections and motions of the heart are of a cold stupefactive, and constringent nature.
1669. Flavel, Husb. Spiritual., I. vi. 57. Opium and such-like stupifactive ingredients.
1789. W. Buchan, Dom. Med., xlvi. (1790), 473. Those [sc. poisons] of the vegetable kind are generally of a narcotic or stupefactive quality.
1797. London Compl. Art Cookery, Brewing, 219. Cocculus Indicus is poisonous, stupefactive, and unlawful.
2. gen. Stupefying, astounding. rare.
1689. T. Plunket, Char. Gd. Commander, 45. What dire Catastrophes impending are? What stupefactive things we daily hear?
B. sb. A stupefactive medicine.
1562. Bulleyn, Dial. Sorenes & Chir., 33 b. Stuperfactiues or dedde things, as Opium.
1626. Bacon, Sylva, § 74. This we see in the Operation of Opium, and Stupefactiues, vpon the Spirits of liuing Creatures.
1668. E. Reynolds, Serm., 24. Thereby teaching us to refuse any Anodynes or Stupefactives which might take away the sense of sinne from us.
Hence Stupefactiveness. rare0.
1727. Bailey, vol. II.