caffeinated /ˈkafɪneɪtɪd/ adjective2 •Containing caffeine naturally (e.g., coffee, tea, and cacao) or as an additive (e.g., soft drinks, sports drinks, or energy drinks). •(informal) Overly peppy or energetic; stimulated by caffeine.For most of us, to be caffeinated to one degree or another has simply become baseline human consciousness. — 2021 formsmore caffeinated · most caffeinated