caffeinatedadj.
/ˈkafᵻneɪtᵻd/, U.S. /ˈkæfəˌneɪdᵻd/ 1. Containing caffeine, whether naturally or as an additive. Usually (and esp. of coffee or tea) opposed to decaffeinated.
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1932 Science 22 July 70/2 The final session..was devoted to papers on..the development of tolerance for a caffeinated beverage, and other topics.
1971 Nature 10 Sept. 142/1 Subjects were instructed not to nap or drink caffeinated beverages after 1800h.
1981 Cook's Mag. Jan. 79/3 Decaffeinated coffee beans are dried, roasted and ground just as caffeinated beans are.
1989 Lancet 1 Apr. 731/1 Caffeinated beverages can decrease fertility.
1995 N.Y. Times 19 Mar. 22/3 Richard Franklin..spotted caffeinated coffee, drunk by those who hate decaf but cannot be sure what they will get if they ask only for coffee.
2000 Daily Tel. 7 July 24/1 In the meantime, avoid heavy meals, rich foods, caffeinated drinks and alcohol in the evenings to see if this helps.
2. Chiefly figurative. Invigorating or stimulating. Also: stimulated (as if) by caffeine.
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1984 N.Y. Times vii. 18/2 Her heart swings between the fading gentility of the Southern family to whom she has promised to return and the caffeinated vitality of her new Northern friends.
1991 Interview Sept. 82/3 There is definitely something caffeinated about Nusrat Fateh Ali Kahn. His music acts like a pick-me-up for the soul.
1997 Guardian 15 Mar. 7/1 At 2am, caffeinated beyond sleep, only US sitcoms dubbed into German will do.
2001 Vanity Fair (N.Y.) Nov. 329 If he had only pioneered the art of bebop drumming, lightening the beat from swing-era wallop to modern, caffeinated skitter, that would have been enough.
This is a new entry (OED Third Edition, September 2002; most recently modified version published online December 2021).
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adj.1932